
In the end, they got Ren settled into bed, with a glass of water and his phone—though a big part of Akechi would have been far more comfortable if that glass was a sippy cup. He wanted to stay, to be on hand, but he didn't need to be told crowding Ren wouldn't be for the best. And he can be on hand just as well downstairs in the park as in his apartment.
So here he is, sitting on a park bench with his head in his hands, having vaulted the closed park gate as if he's done it a thousand times before—which may not even be untrue. Besides his fear for Ren, the things he's learned rotate in his head. He notices his episodes, now—that never happened before. And this thing Ren believes he did... what can it have been? Something everyone but him knows about, clearly. Something bad enough to make them hate him? Even to kill him?
Perhaps not coincidentally, he's sitting on the same bench another Akechi was feeding the birds from, long ago. The bag of breadcrumbs he forgot earlier has vanished, as if it never was.