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.