On their way back from Summer Comiket, an otaku guy who helped out with a cosplayer girl hit it off with her—They bonded over their shared love for anime and games, and he even helped out at her booth. She's a cute and moderately popular cosplayer, known for her revealing outfits that highlight her ample bosom. He thought things wouldn't go further because she had a boyfriend, but... the cosplayer girl and the otaku guy ended up in a secret hotel room together, engaging in NTR. He usually only got to admire her cosplay from the side, but their bodies were just too compatible, leading to multiple creampie orgasms.