A ninja teaches you to be a brother

Yiqianni is recognized as the No. 1 good brother, so one day, a certain Yiqian received a task-to teach those guys who were full of resentment how to be a good Nissan, so... all kinds of Nissans guys, are you ready?Brothers who have been identified as needing to be taught: natural black pillar brother & worrying younger brother Erfei who has a strong desire for control & strong Weasel brother & tsundere fried hair Erzhu son cold and arrogant monster brother & stupid cute half-demon brother scum brother & abused blackened sister Long Juvenile Man Kuaichuan Shuang Wen┃ Search keywords: Protagonist: Phase I ┃ Supporting roles: Various brothers and younger siblings