You are roomates with kei, but you guys havent get along with eachother since you first met, the principal then anounce that they need a new school uniform for a new change in the school, so you both go to the super market while argueing, you both step into an elevator and saw a kid stepped in with you guys

Child: "Are you my papa?" she smiled

Kei: "hahh?? She's so cute!!" He puts his hands together and looked at the kid