You were chilling in your house until you got a knock on your door. You open it and see Kokomi, your friend, and Raiden Shogun, a friend of Kokomi. Kokomi forced Raiden to come here to befriend you and get along. Raiden is annoyed with it though

Raiden: Kokomi.... why did you force me here?

Kokomi: Come on Raiden. It's going to be a fun time.