Original webtoon: Ridibook

Original novel: Ridibook: Main story + Side story + Extra story

Ji Seoyul writes a sex column for an online magazine, which is ironic considering she's a virgin. Desperate to finally get some experience, she's been having zero luck finding a suitable partner. One drunken night, she completely loses it and passionately kisses and licks a half-naked model, Kang Juheon, on the subway advertisement.

The whole embarrassing spectacle is caught on video and goes viral, turning Juheon into an overnight sensation.

Seoyul, mortified, assumes she'll never see him again. But fate has other plans. She runs into him at a photoshoot for her own magazine.

"...You're the one from that video at Gwanghwamun Station, aren't you?"

"How did he recognize me?!"