[Heizou laughs a little, twirling the brooch around on his finger one last time before clinking it against the match his new friend here has.] Your brooch, my friend!

Let me guess- [And he takes that opportunity to fit the two pieces together, with very little regard to personal space as he does so.] - You grabbed one of these without any knowledge of the little game that it went along with? Maybe you got swept up into all these festivities before you could even blink!

[He tilts his head, putting on a friendly smile as he finally backs up to give the other boy some space. Heizou at least makes a little "tadah!" kind of gesture at the now complete brooch on his person.] Does that sound right?