The Blond witch is Tanya The Evil!

Yare yare daze

Just remembered, the kid is thirteens son.. thirteen is zero's brother, are they blood related? I'd hope not, otherwise this is just more typical anime fanservice promoting incest..

Yes, that is her blood nefew, but also remember that the Dawn Witch did mention how the lips are the most optimal means to transfer. Given that Zero's lover was about to die, I'm pretty sure the only thing she was thinking about was how to get the most mana in the shortest time.

Another Disappointing One.. This Season Doesn't Seem Great..