I waited for this new chapter for like ages . But someone tell me , in which hole was he a...

That's one weird question you have there
But I'm pretty sure it should be the man made hole our character here made. Probably some hole on the abdomen area maybe under the stomach and above the pelvis. Not too sure. Since he called it 'entrail onahole'. Must be where our intestines are at...

Hey ! Yea is under and inside the stomac he did fucked her , I did some google research after. Thanks for your reply tho .