In a crowded, desire-filled commuter train, a man named Kichiichi Kusakabe stands with his hood pulled low. His eyes discern the desires of others, and with his masterful finger techniques, he leads women into pleasure. Houjou Rimika, a popular erotic exposure streamer. "I can't believe in ○○! The scum of society should just disappear!" While muttering this, she plans a live stream using ○○ as a topic, but there she confronts Kichiichi—