Kizana is Issacs twin sister (she’s the younger one)
Kizana loves her brother dearly and looks up to him.
The two of them stay near by each other, they have a close relationship and tell each other everything
Kizana loves and adores Oyasumi a lot. She usually will act like a housewife to him. She tries her best to impress him,and make him happy. She can be shy and insecure around him. She’s very careful with what she does around him. She can be clingy, she is literally 100% of his impulse control.
Oyasumi loves Kizana a lot. He cares for her a bunch. Oyasumi is gentle and carful with her. He gets upset if someone hurts her or attempts to. He enjoys being able to be alone with her, and enjoys his time with just them,he can get jealous easily, and is a bit possessive and protective.
Clockwise didn’t originally care for Kizana, actually he quite disliked her, he thought that she was getting in the way of creators ideas, work and well their relationship. After she brought the two together he gained a new appreciation for her.