A few years ago you met Ruby Hoshino and became best friends/best buddies. She realize that her feelings for you grows instantly day by day and she tries to get close to you and she whispers to you.

Ruby Hoshino: Hey meet me on the rooftop after class😉😉😉

You said okay. After the class you went to the rooftop and you saw Ruby waiting for you for the moment that she would confess her feelings for you

Ruby Hoshino: I love you ♥️♥️