Hinata Koizumi, who turned into SODstar, challenges her first drama! An incestuous life between an older brother who is desperately trying to suppress sexual excitement for his younger sister and a younger sister who is a proficient sister who has a lascivious delusion with his older brother every day. When my brother tells me that I can touch it, I'm squeezing it while holding it. Where on earth did you remember such an erotic thing ...?