The next evening, Kato Yusuke, who was alone at home, studied the system.
[Products: Dried small fish, wind chime, USB flash drive, portable oxygen bottle, tracker, beauty cream, Dongyun family’s scarf, blood medicine, ordinary version of Wanyu Medicine]
(Note: A new purchasable item is added every month.)
[Money: Each point can be redeemed for 100 yen]
(Note: Only one-way redemption is supported, and there is no upper limit on the amount that can be redeemed.)
[Stamina: 1 point/5000 points]
[Charm: 1 point/50,000 points]
[Intelligence: 1 point/100000 points]
(After all attributes exceed 10 points, the points required to redeem each point will increase exponentially.)
…
First up are the new products this month:
[Portable oxygen bottle: A savior for outdoor sports enthusiasts, you can replenish oxygen anytime and anywhere (100 points). 】
A thing that seems useful but is rarely used is basically useless.
Kato Yusuke jumped over it.
Followed by this month’s skills:
[Entry-level bartending (100), proficient-level maid (1000), proficient-level language mastery (10000), master-level pet grooming (100000)]
I don’t know if I ran out of luck with the all-healing medicine that was refreshed last month. There is nothing eye-catching among the skills that were refreshed this month.
In fact, the skilled maid with unknown purpose makes people's eyes dark...
"System, exchange language mastery."
"Ding, after deducting 10,000 points, the host will gain proficiency level language mastery."
A huge flow of information poured into my mind.
Kato Yusuke closed his eyes and listened quietly, then slowly opened them about ten minutes later.
Then, he spoke directly into the void.
"Empieza donde estás. Usa lo que tienes. Haz lo que puedas. (Start where you are, do what you can with what you have.)"
It's pure Spanish.
"Là où on s'aime,il ne fait jamais nuit. (It never gets dark where there is love.)"
It's pure French.
"Das Schicksal bestimmt, wer in unser Leben reinkommt. Aber es ist das Herz, das entscheidet, wer innen drin bleibt.
(Destiny determines who will enter our lives, and our hearts determine who we will side by side with.)"
It's pure German.
"Meow meow meow meow?"
It's pure... uh, cat language.
Kato Yusuke, who had tested his new ability twice, lowered his head and met a pair of green and clear pupils.
The black cat was looking at him with its head tilted, as if curious about his chirping.
Kato Yusuke simply held it on his lap, stroked it, and took out his mobile phone.
I randomly found a few foreign language movie video clips online.
Without reading the subtitles and only listening to the original sound, he found that he could understand every sentence in it easily, as easily as breathing.
Compared with the useless oxygen bottle in front, this skill is much more practical.
He continued to study.
"System, open the panel."
[Character: Kato Yusuke (Intruder of Time and Space)]
(Explanation: Time has left traces on you. About ten years have been deducted from your life, along with certain negative effects.)
[Stamina: 8]
[Intelligence: 8]
【Charm:9】
(Evaluation: The posture of dragon and phoenix)
[Items: USB flash drive, qi and blood medicine (17 pills), tracker (available 1 time), memory potion (empty), "Guidebook of Strengthening the Foundation and Peiyuan Zhuang Gong"]
Overall, the highly practical "language mastery" skill has become the only highlight of this month.
Kato Yusuke focuses on personal belongings.
With a thought, an empty glass test tube and a book appeared in his palm.
[Memory Potion (Empty)]
"Instructions for Strengthening the Foundation and Peiyuan Zhuang Kung Fu"
Both props are rewards from the previous [Master of the Harem] mission.
Because of his busy schedule a while ago, he has never had time to study these two things until now.
[Memory potion (empty): It can copy and store a user's memory, allowing the person who drinks the potion to experience it from a third-party perspective. 】
Just like the literal meaning, this is a prop that allows people to see other people's memories.
Kato Yusuke was slightly absent-minded and couldn't help but recall the past.
A long time ago, he drank a similar potion. It brought him memories of vine trees and the work "Chainsaw Man".
Because he had experienced it himself, he knew exactly what it felt like after drinking the potion.
——It’s like watching a movie.
He can feel the plainness and excitement, and can also personally experience the various emotions of the protagonist, and has a strong sense of immersion.
But the same.
Although the sense of substitution is strong, the memory still belongs to the original owner. The audience can only be regarded as a bystander and cannot truly become the other party.
'If I put my memory in it, the suffix of this thing should become mine.'
Kato Yusuke thought silently and put the props back.
"Unfortunately, I have no desire to share and no memories to share with others."
Saw the memory potion, then the next one.
He started to open the "Instruction Book of Strengthening the Foundation and Peiyuan Zhuang Kung Fu" and started reading it at will.
It contains a lot of written guidance, as well as corresponding explanation pictures, showing little people making different movements.
"The rewards in this system are really unfair." Yusuke Kato cursed in his heart, always feeling as if he was being looked down upon.
With nothing to do, he decided to give it a try.
Put the black cat on the ground, then come to the center of the room and stand still.
While holding the Zhuang Kung Fu instruction book, he set up his posture according to the instructions above.
Bend your knees and lower your hips, keep your feet shoulder-width apart, tuck your jaw and relax your shoulders, relax your waist and tuck your hips, open your knees to both sides, and keep your spine neutral.
Kato Yusuke closed his eyes slightly, inhaled and moved his palms three times, and finally pushed his hands out and hugged them in front of his chest.
Mainly the legs, the muscles in the body suddenly became tense.
The whole set of movements was a bit similar to the stances for health maintenance, and he did not feel any systematic mystery from it.
'Can this really strengthen our foundation and cultivate our talents...?'
Kato Yusuke remained skeptical about this, feeling vaguely deceived, but the next second he saw the requirement to "keep your mind clear of distracting thoughts" and gave up his random thoughts.
In this way, he quietly practiced Zhuang Kung Fu in his room.
At first, the black cat was curious about his behavior, and kept circling around his feet and meowing. However, when he saw that he remained motionless, he quickly lost interest and went to play by himself.
As time passed little by little, Kato Yusuke felt that his body was getting slightly warmer, and a warmth slowly but surely emerged from his dantian and spread to his limbs and bones.
At first it was as comfortable a temperature as a hand warmer.
Gradually, the hand warmer bag turned into an electric heater, and the electric heater turned into a small stove, making Yusuke Kato frown slightly and sweat slightly.
The feeling at this time is no longer so comfortable, but it is still acceptable.
But in the end, he felt like he was holding a big fireball. Not only did his heartbeat speed up a lot, he even felt like his mouth was dry.
He vaguely felt something was wrong, so he immediately stopped standing, took a bottle of oolong tea from the refrigerator and started drinking it.
The cold tea poured into the mouth, down the throat and into the stomach, bringing a refreshing feeling.
The coolness of the drink temporarily suppressed the heat in his body, making him feel a little better.
But only slightly.
Within a short while, the heat returned with a vengeance!
Kato Yusuke's body seemed to have accumulated some kind of energy, causing his body temperature to rise.
"System, what's going on with this skill?" He asked, but received no response.
He ripped off the long sleeves he was wearing, rushed into the bathroom, turned on the faucet, and splashed cold water on his face.
But his body seemed to not belong to him and refused to calm down.
By now, the heat in his body was no longer under his control.
"Is this the system you call consolidating one's roots and cultivating one's strength!?"
Kato Yusuke gritted his teeth and stared at the mirror. His face inside was red, his handsome face was slightly ferocious, and veins appeared around his temples.
He took a deep breath and decided to take a cold shower to calm down. When he was about to take off his clothes...
Ding dong~
——The doorbell was suddenly rang.
Kato Yusuke couldn't help but frown deeply, pulled a bath towel and put it on his shoulders, then walked to open the door with heavy steps.
"Who...?"
What appeared in front of him was a mysterious woman wearing a black trench coat and black high heels.
"Yo~"
Akane Hongsaka pinched the brim of her hat, raised her gaze slightly, and said hello frivolously, "Good evening, brat."
A pair of burgundy eyes narrowed playfully, as if they were reflecting the color of his hair, and they were as passionate as fire.
Kato Yusuke couldn't help but froze when he saw the person coming, while Akane Kurisaka stared at his toned chest muscles exposed from the towel, and her eyes couldn't help but move slightly.
"Huh~ What? Did you just take a shower?"
Kato Yusuke was brought back to reality by her voice, his eyes suddenly became dark, and then he pulled her into the house.
"ah……!"
Akane Benisaka was accidentally dragged by him and staggered. She staggered two steps and bumped into his arms.
Bang——
The sound of the door closing sounded from behind.
"Hey you--!"
Due to Yusuke Kato's rough actions, Akane Kurisaka was about to get angry, but was pressed against the wall by an irresistible force.
Immediately afterwards, a strong body pressed up.
She subconsciously raised her head and met a pair of fiery black eyes like a beast, as if they wanted to eat her alive.
Her expression couldn't help but stiffen, and before she could speak, Kato Yusuke arbitrarily lowered his head and kissed her lips, asking for it wantonly.
"Hmm——!?"
The thick male breath hit her face, and the hot breath slapped her face, making her heart feel numb immediately.
The other party's hot breath entered her mouth. Akane Benisaka felt her waist soften for a moment, but was caught in the next second.
She instinctively stretched out her hand to push and press on his hard chest. Her hands felt hot and even a little moist.
At this moment, Kato Yusuke tasted the slight smell of smoke and alcohol, and the heat in his body seemed to have found an outlet, becoming more aggressive and intertwined with her.
Akane Benisaka was embarrassed by his aggressive attack, so she put her arms around his neck, actively launched a counterattack and kissed him back, and was entangled by Yusuke Kato.
The air in the entrance hall warmed up, and the sounds of each other's swallowing were amplified.
Kato Yusuke slowly raised his hand and inserted his fingers into her hair, with a domineering look.
In just a moment, all her lipstick was on his face.
After a long time, they finally separated.
Akane Hongsaka took a deep breath as if she was suffocating, and then she had time to look at someone.
She was not amused by the saliva between the two of them, but she was made to laugh by the mottled lipstick marks on his lips.
"Hoo, ho...ah hahaha, did you take the wrong medicine today?"
Kato Yusuke didn't answer. He rubbed the back of his hand around his lips, wiped off the saliva and lipstick on them, and said in a hoarse voice: "No, I found the antidote."
"Antidote?"
Akane Kurisaka frowned in confusion, not understanding what he meant, but the next second he picked her up by his hips and strode into the bathroom.
"Wait a minute! What do you want to do?"
"I'm sweating and need to take a shower."
Kato Yusuke put her on the sink and took off her clothes while talking.
It was already December, but the other party went out at night wearing a pure black dress with fluttering tassels on the hem, which barely covered her perky buttocks. No one knew who she was wearing it for.
Click~ Two high heels were thrown to the ground, and then others.
Akane Benisaka's eyelids tightened slightly, and she laughed and cursed: "You rude brat, how dare you ask me to wait for you. Anyway, just wash yours, and I'll wait outside."
As she said this, she wanted to jump off the sink, but Kato Yusuke didn't give her this chance, and held her waist and came to the shower.
The switch is turned on and hot water flows out.
Kato Yusuke put his ear against hers and blew a breath of hot air into it: "Let's come together, little auntie."
There was a hint of wildness in his voice.
"You little bastard...I'm here to talk to you about business!"
Akane Hongsaka blushed, and the canonical transformation had faded away, revealing the original coordinates, with two extreme points pointing directly towards him, teasing someone's functional integral.
Kato Yusuke licked his lips, his mouth was slightly dry, and he replied calmly: "Little aunt, be obedient and don't bother me. Be obedient and be my antidote."
Whoosh——, whoosh——.
The sound of shower head and running water resounded in the bathroom, water and milk blending together.
…
"Speaking of which, little aunt, what do you want to talk about?" Yusuke Kato asked proactively.
"Hmm...it's nothing, it's just that my Lagrange quantity has not been calculated by the E-L equation for a long time..."
Akane Hongsaka replied in a hoarse voice: "Aren't you very smart? That's why I came to you for help."
"I see, this is not difficult. Let me derive the equation of motion first and let me see how your regular momentum looks like."
Kato Yusuke began to guess the solution of simple harmonic vibration, and the ever-accelerating angular velocity made his heart beat.
"Ah! The Ross function doesn't work."
Akane Hongsaka said with a mixture of shock and anger: "We agreed that we would only derive the Lagrange equation, why did you use Hamiltonian mechanics!"
Kato Yusuke ignored it and was minding his own calculations.
Seeing how stubborn he was, Akane Benisaka finally gave in.
"Okay, Hamilton's canonical equation is not impossible...but you must use Boisson's brackets!"
"Boisson's brackets are too cumbersome, let's just use variation!"
The sudden change in mathematical methods caught Akane Benisaka off guard. He hurriedly tried to stop it, but found that his calculations were about to yield results.
"Hmm... I think I'm about to find my motion integral. Let's do some more calculations. That's right... it's the conserved quantity..."
After a lot of calculations, Akane Benisaka's head went blank, almost exhausting all his energy.
Kato Yusuke stared at the calculated results, frowned, and said, "This is wrong."
"...What's wrong?"
"There is a problem with the calculation results and we have to recalculate several times."
When Akane Kurisaka heard this, her beauty suddenly changed color: "You have to do the math yourself, I've had enough of this damn theoretical mechanics! I won't keep you company anymore!"
However, Kato Yusuke disagreed and captured her back.
"Little aunt, be obedient. If you don't calculate the correct result today, I won't let you go."