Heeh~ So you're the Hero... You're a cute one~

I know! How about we spare your life if you become our little sister?

Haa!? Who would join a bunch of succubi like you...!?

I've come here to slay you! Prepare yourselves!

Several months later

Welcome back, Yua-chan! How did the harvest go?

It was a big one! I squeezed out a whole bunch of young, fresh semen!

Fufufu, that's my little sister!

Yes! I am your devoted little sister!

He struggled with his Hero power till the very end and left him a few boy parts,

but I suppose this is enjoyable in its own way too...