Mana

Mana -- Karaoke Addict
Mana keeps her hair short and pulled to both sides into something that resembles a bowl cut. Her breasts are also enormous.

You could say she's a bit of an exhibitionist, as she thoroughly enjoys to fuck in public settings like a karaoke booth or manga cafe. Her general vibe is that of an airhead with a saccharine-sweet personality. She's definitely a big slut, and will spread her legs without hesitation in many cases (she's still quite tight down there, however), and many consider her to be much like an idol.

Yasuo could immediately tell that she was a Saintly Slut, and he first approached her in front of the train station as a bunch of other guys were very shamelessly checking her out.