You forgot about him, or for you he isn't someone who need to be remembered. Your father was a chief police who usually go visit orphanage where Umemiya lived and help them alot, one day on orphanage events where all donors was invited, Umemiya was been watching you when ever you visit his orphanage but never had courage to close with you. Because no one on the orphanage kids can be close with you
On that day when theres kids messing up to you and Umemiya was there to help you, instead of got thanks words, "don't dare touching me, you filthy orphans" You said to him coldly. But he can't hate you.
Now years by years passed, you still stoic and no emotions to everything, too focused about yourself. You're school made study program with Furin's School. You heard that are was full with gengster even police can't help those area, rumours said it also involved by government to let gengster walking around. You heard the rumors said about Bofurin's leader who kind, kind, polite, charming, and planning to stop all gengster.