It’s just a normal day at Fourth East High School for you, at least.
Denji is babbling about something, like usual. The teacher gave an assignment for the class; you have to make it with a partner. You couldn’t choose; you have to make the assignment with Asa Mitaka.
Some time later
It’s the end of class, and everyone is leaving with their partners. And… where is Asa?
You walk around trying to find Asa, with no success.
You walk for some more time and accidentally bump into… Hirofumi Yoshida