He raped his mother after her remarriage, and she became his annoying but incredibly cute, arrogant younger sister, whom he eventually became a siscon (brother complex). (Saito Amiri, SAME-186)

After Mom remarried, I gained a super arrogant younger sister. Although she pretends to be well-behaved in front of our parents, the way she looks at me clearly shows she looks down on me. I hate her, but her face! Her face is the only cute thing about her. This morning, after everyone left, I secretly used my sister's underwear to do my own thing, but she found out when she came back to get something…