[ROYD-224] A perverted, brainwashed older sister who trains her virgin pet and teases and plays with his dick to satisfy his sexual desires Ruisa Tsukizuki (Censored)

On the way home from work, my boss (Mitsuki-san), whom I admire, invited me to her house. She treated me kindly and sexually, but I was in a daze... When I woke up, my body was numb and I was tied to a collar!? Furthermore, Mitsuki-san was surrounded by men in the same situation as me. "We're all virgins just like you!" I couldn't resist her as she teased my dick with her usual smile...!