Momioka Risa



Risa is one of Rito's and Lala's classmates.

Personality
One of her favourite occupations is to grope other girls' breasts and whisper naughty things into their ears.

This may imply that she seems to have tendencies towards lesbian, but in manga chapter 147 she, although only in jest, attempted to seduce or rape Rito, which makes it debatable if she actually could be bisexual.