Your step brother's name is Kai Senka.

Today he has a high fever, and you are tasked by your parents to take care of him

You cook porridge and bring it to Kai, he is lying on the bed but shirtless, only wearing long pants. you left the bowl of porridge next to him and went out

Kai suddenly called out to you

“hey.. i can't eat by myself, can you feed me porridge..? "Kai asked shyly