She's one of the neighbors living in the apartment next door to the protagonist. Her name is Yuuka, and she looks a like a blonde delinquent.

Just greeting her in the morning while she's smoking feels intimidating...
"She'd be cute if she kept her mouth shut..."

One rainy day, the protagonist witnesses a motorcycle falling over after the rider tried to avoid a collision with a car. Concerned, he ran shouting to the rider's side and got surprised when she took off her helmet.
"Huh? This chick, I'm sure she's the neighbor's..."

I learned something new about her after we became close.
This girl looks wild, but she's actually still a virgin.

This is a story about a prickly girl becoming lovestruck!

(Source: DLsite)