Synopsis
I don't need deep connections in my life. No interest in romance, and beyond that, one good friend is enough for me. I threw away a normal youth in exchange for efficiency, and I've been fine with that. But somehow, one person keeps showing up in Ooboshi Akiteru's room anyway. Not a little sister. Not a friend. Just an irritating, obnoxious kouhai who also happens to be my friend's little sister: Kohinata Iroha. "Senpai, want to go on a date~! …Just kidding~?" She runs on something closer to energy drinks than actual blood. She takes over my bed like it…
