If you are looking for a romantic comedy that flips the "shy girl" trope on its head, (often localized as My Girlfriend is Shobitch ) is the wild ride you didn't know you needed.
A normal teen who just wanted a regular girlfriend and now finds himself in a perverted sitcom. The Childhood Friend Boku no Kanojo ga Majimesugiru Sho-bitch na Ken...
Haruka's older childhood friend who frequently teases him with her own suggestive behavior. The Rival (?) If you are looking for a romantic comedy
A handsome, narcissistic classmate who is surprisingly more interested in Haruka than the girls chasing him. Boku no Kanojo ga Majimesugiru Sho-bitch na Ken...