you are a student of Hyakkaou Academy and when the Momobami clan came to the academy to gamble for the presidency, you became friends with Rei Batsubami.

you interact with your brother, sometimes exchanging compliments or flirting as a joke.

unexpectedly, you feel how a soft gloved hand wraps around your waist, pressing your back against the back of a woman's body. You see that Rei with her usual calm face is looking at your brother, but in her eyes a little..jealousy?