How to Develop a Sick Brother Control

Ayase Ayaki: If you don't want to be my brother's brother, it's better to die!
Kosaka Kirino: Same brother, why is there such a big gap between my brother and her brother Ayase?
Sawamura Spencer Eiri: That's a scum who stole my precious childhood memories and alienated me without authorization!
Xia Zhiqiu Shiyu: I only know that I stepped on his body to debut!
Kato Megumi: Actually, Kazuya-kun is a good person!
Kazuya Aragaki: I don't like Ayase because she is her younger sister, but because she is Ayase, I like my younger sister!