[He takes it and, for lack of a better option since he also doesn't have any container, straps it into his belt, where it keeps wriggling and flailing.]

It's a game. People hid many of these dolls here in the Brocéliande, and people have to find them. If we manage to catch one for me too each of us gets a set of drinking glasses.

[He's definitely aiming for the grand prize himself, but Asterios is clearly out of the loop, so Hijikata is already glad if he's willing to complete this one challenge with him.]