(The screen says "the shape of voice".)
Our boy is clearing out his life. He quits his job, sells his collection (of something,) and empties his bank account to leave an envelope full of money next to a sleeping person.
He's marking the days off the calendar.
The credits play over The Who's My Generation, as we flash back to our boy in sixth grade.
Our boy, Shoya Ishida, is bored in class when a new transfer student, Shoko Nishimiya, appears.
Shoko introduces herself by writing. She can't hear.