I don't often favorite chapters with the group tag, but some just really deserve it. Even if we only got to see him creampie one of the girls. Nothing the sequels can't fix, though, hopefully.
Two devilish girls with adorable fangs to boot? Surely nobody could say no to their request to come over!
And when they pulled the "You're a teacher and stand-up guy so we feel safe", there was simply no escape for him at that point.
Great ending though. Yep, it was pretty obvious from the start that they were from the school he worked at, and I imagine they now have prime blackmail material to continue this little relationship with him...
"It was on that moment he realized. He fucked up!"