It does happen that people set up a reward before a battle, but...

I didn't expect your opponent would agree to that.

I have to collect panties, or else I can't return to the place where a girl is who's like a little sister to me.

I need panties... I need to collect panties... Or else I can't return!

A litte sister...? Family is important...

If that's how it is, let's wager panties as a battle reward!

And like that, after I used tears to get my way, she happily agreed!

As always, she's an incredibly good person!