Just give in to her...propose, force her to wait until the wedding night as her punishment/penance for siding with evil, than end her virginity, like she wants, as her reward.
I mean, the Villain League's pretty much above-the-clouds nothing to do with faceless minions like us, you know...What they do doesn't even trickle down to us at all...W-Wait, no... I shouldn't be swept in with their flow...!!I almost died on that mountain, and it's going to end up this ludicrous...!?At any rate... I could help the Hero League by diminishing the enemy's strength, even if only a little...!Besides, whenever something's about to happen, Boss will just tell us all about it, anyway... Right?Yeah.These guys are too easy-going.You should go to the hospital and get CT scans of your brain and eardrums sometime!!I'd bet they're rotten!!Prepare yourself!Today will be your last day...I didn't say that!!As a virgin...!? Originally punning "indou wo watashi" ("to perform last rites/give final notice") and "inkou to watashi" ("obscenity and I").