Shy otaku Tomohiko Suzuki secretly has feelings for the popular gyaru Ruka Ayase. He changes his hairstyle and look to get closer to her. Surprisingly, the top-tier gals notice him (calling him “Chom”). Ruka invites him to her house, boldly asks if he has a girlfriend, then tells him to show his dick. What follows is intense sex — deepthroat, paizuri, raw pounding in missionary and doggystyle — until he fills her with creampie, turning his ordinary life into a chaotic gyaru harem adventure.