[He laughs again, a little more quietly, and shakes his head. Not in denial! Just in a kind of helpless exasperation.]

I'm sure you'd be able to figure it out if you put your mind to it. It's not like it's some big secret or anything.

[He says, even though he's told basically like... just Souda... and Dirk made some Inferences that Hinata's not sure means whether he's figured it out or not.]

It's Ichinose Hajime.