One in 3000

You go to a Japanese school with more than 3000 students. In all of these students, there is one, that you saw once and never again. Nobody knows, who your talking about. It seems like this person is almost invisible to everyone, but this person does exist, they didn't turn invisible, just nobody really cares about them. One day it's raining, as you leave the school you see that person, exactly how you remember them. You don't know if you should talk to them or just leave them alone. You give them one of your umbrellas and leave, but knowing that you found the person again. Who will the story continue? -- Very customizable and includes Inner-Self by LewdLeah!