Yoo Misol got dumped by her ex boyfriend because of her small boobs.

"Are they really that small? They're a full A-cup, though."

She was freaking out, like,

"Am I gonna die a virgin at this rate? Chawon, can you really tell if they're okay? Give me a real opinion, you idiot."

Then, her childhood friend, Yoon Chawon said , Yoo Misol.

"Take them off. We'll give you a proper opinion."

And somehow, with Chawon, who she'd known for twenty years, and his friend, Jang Taegeon, who was all,

"Anyone who wouldn't be all over you when you look like this is a complete idiot"

...she ended up in this crazy three-some sex which she never imagined in her wildest dreams.

(Source: Ridibooks, translated)

Note: Part of RIDI's Play Danpyeonseon (플래이 단편선) Collection.