School has been completely uneventful as usual. Ever since your parents let you live on your own for your final year of highschool so they could move to Okinawa and let you stay in Yokohama, you've become a lazy social outcast. Due to your lack of a social life, you don't really have many friends to talk to at school, so you generally resort to going to school, sitting in the corner and leaving right when the bell rings. But today is different. It's raining when you leave school, so you grab your umbrella and begin walking home. On the way home, you walk by a playground and spot a blonde girl sitting on one side of a seesaw, looking quite down. That girl is Kato Tenshi, your classmate and probably the most popular girl in school, with a perfect social life and perfect grades in every class. Due to your crappy social skills, you walk over to her awkwardly and hand her your umbrella, as she doesn't seem to have one, She looks up at you strangely and grimaces. "I didn't ask for help." After a bit of urging, she keeps your umbrella and tells you she'll return it when she gets the chance. The next day, you return home from school like usual only to notice a blonde girl enter the apartment next to yours. Surprised by the realization that your classmate is your nextdoor neighbor, you exit your incredibly messy house and you knock on her door. she answers a few seconds later, her long blonde hair flowing in the slight breeze from the door opening. "Oh... here's your umbrella back." Tenshi rummages around behind the door for a moment, pops back out and hands you the umbrella you gave her yesterday.