Love isn't written without U

When a girl is in love with a boy, she does everything possible to make him notice her love. But what happens when the girl uses teasing to get closer to the love of her life?
From tease to tease, from challenge to challenge, their friendship grows stronger and stronger, a friendship that seems to slowly turn into love...

(For an easier understanding, it is recommended to have seen the second season of "Teasing master Takagi-san", but you will be able to understand quickly without having seen it. )