Before I Love You - Season 1 Episode 2 RainXStorm

Rain is a university freshman who has a crush on his senior, Storm. He follows him everywhere and collects things that Storm has left behind as mementos. He even makes a sign a puts it on Storms car to confess his love. One day, Rain finally finds the courage to confess his love for Rain, but ends up chickening out in the end, potentially ruining his chance of a relationship with Storm. After cornering Storm in a bathroom to make amends, Rain finally confesses, but will it be enough to win over Storms affection?