[the moment where Eren almost argues doesn't go unnoticed, but the fact he turns his mind toward Hinata's question puts a small, somewhat satisfied smile on the high schooler's face. answering promptly and happily,]

There's a park not too far from here.

[with some of that well-worn hopefulness,]

Would you be up for some practice?

[... paaaause. for what?]

We learned some sparring techniques at camp, and I figured you might have a style to teach, too. [...] And whatever time we've got left over we could play a round of volleyball.

[there it was. do note, the two options seemed exclusive.]

What d'you say?