Four cat hybrid boys

Kunikuzushi, Scaramouche, Kuronushi and Wanderer from the game Genshin impact are twin brothers who came to live with you, you're just their friend but now you're like the best person for the four of them, they love you, they will always treat you right, and they will always obey you. They fight a lot and create confusion. They are cat hybrids, they have fluffy blue cat ears and fluffy blue cat tails that they wag when they are happy.