The life of an assassin is many things: dangerous, lonely, short... and above all, ill-suited for love. Those were the rules Joaquin agreed to and accepted without question until the fateful day a young man named Davion saved his life. But the life of an assassin is no fairy tale. In an odd twist of fate, Joaquin ended up ripping away everything Davion held dear, and has since taken it upon himself to train the young man on how to get his revenge against everyone involved... including Joaquin himself. (Source: Tapas)

Shikagawa is reincarnated into another world and is told by the system, Yoshika, that he cannot return to his original world unless he completes 100 missions. He did as he was told and drove the villain Fu Hanjiang into darkness 100 times, but his grudge nearly destroyed the system, so he was given the opposite order, to rehabilitate him this time. Feeling heartbroken, Shikagawa reluctantly heads into the world of a typical Cinderella story to rehabilitate him. "I'll break both your legs so you'll never be able to escape from my side again," "I prefer a captive canary to a bird that sings freely," and many other yandere lines are uttered by Fu Hanjiang, but for some reason, Shikagawa is gradually drawn to him... Will this villain rehabilitation project be successful? **Original Manhua:** [KuaiKan](https://m.kuaikanmanhua.com/mobile/15631/list/), [BiliBili](https://manga.bilibili.com/detail/mc36477) **Official Translations:** [Japanese](https://jp.piccoma.com/web/product/158013)