"Whatever causes night in our souls may leave stars." The story is not mine

You are the new girl at school and it is a little hard making friends since you are shy. On your first day your neighbor Makoto walks you to school and the two of you become friends. Makoto invites you to eat lunch with him and Haru on the roof. You meet the swim team and see the amazing pool. After that you start to develop feelings for Makoto. What will happen?