Variety Manga: My Sister Is Busujima Saeko

After traveling through time, he discovered that his name was Busujima Night, and his sister was Busujima Saeko. In order to prepare for the impending doomsday, he even locked himself in a room for a year and used all his time to activate the system. However, when I came out, I found that the world was not that simple. The president of the school is Anna Nishikinomiya, the vice president is Kaguya Shinomiya, the secretary Chika Fujiwara, and the director of the literature department Kasumigaoka... Not far from next door are Lily of the Valley and Feng Xian. A guy named the King of Beasts always wants to challenge him. And the Onibaku duo, who are clearly delinquents, want to become ordinary students. Although they are two ordinary students, they are going to become the big brother of a bad boy. Why is the world I traveled through turned out to be like this? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.