I only remember arc 1. It is mtl translation. So in the first arc the MC have four brothers and 1 sister. They are half brother (maybe). The MC have to break the relationship between the sister and the brothers. As brothers listen whatever the sister say. He make the four brothers fell in love with him. They go on beach where drug one of the brothers and he find out. Also, at school there is snowhite show which was arranged by the onew of brothers. The MC is the stepmother should is kind and care for snowhite and the brother is the mirror who is in love with the the stepmother. Also one of the brothers is a pervert as he use adult toys a lot(so embarrassed). It is worldhopping novel and also it have a system. He ask for a pill in the first arc so he can become more beautiful and seduce the brothers.