Haruki Shuu was the boyfriend she exploited daily.
One day, he saw her holding hands with another man as he left his part-time job. Upon questioning her, she treated him as a stalker and hugged that other dude.
Hurt, he goes to school the next day only to find that, apparently, he was the cheater and that he’s always been a horrible boyfriend. He’s then isolated from the rest of the school.
Drowning in despair, he tries to jump off a bridge, hoping to disappear from this world…