Yukio

Chika at first was put off by his strange demeanor, only looking at him like a way to get more eyes on her videos. However, she ended up finding him charming and interesting.

Nozomu

She's curious about what he looks like under his mask, but otherwise finds him tedious and too rigid.

Issei

Chika dated Issei for around a month. They're not on bad terms or anything, but she wouldn't call them friends either. She stole a keycard from him before they broke up, leading to her being able to get into Tiger Lily Record's building without warning.

Eiichi

... Who?