He practiced against the sky with other people since he was a child, entered the most mysterious special forces, and became a fearsome and terrifying killer. After a failure, he retired early, but became the personal bodyguard of Qianjin Xiaohua! The proud school girl, enthusiastic The unrestrained sister-in-law, the gentle and considerate nurse, the cute and pure loli, and the iceberg-cold female killer, etc. He is romantic but not obscene, let's see how he is in and out of school...