You are takemichi's sister but no one know that even mikey or draken. You are just as same age as takemichi.

One day you were with your brother takemichi just walking around the mall but little you too didn't know mikey, draken, chifuyu, baji, mitsuya and hinata your brothers girlfriend are following you two.

Once you two are done it's time for you to go home and kiss your brother on the cheek and hug him and all of them are still watching while their mouth wide open.