Himouto! Umaru-chan - Happy Desu

It just looks that way in comparison to her.

I absolutely love this character. She's a rival, yet she's not a stuck up, narcissistic bitch like in a every single show where the protagonist has a rival. Even though she doesn't seem like a real type of person, i absolutely adore how they made her a friend rather than an enemy in this show. She is very likeable, and is my absolute favorite character in this show.