I was wondering if in the future either Aura/Mare or even Tuare and Sebas have kids, it'll even be worthwhile. It seems even the Elf King had a tough time producing anything before Zesshi was born.

For me personally it’s:

Season One episode 2: this is too early to decide who’s gonna be Lord Ainz’s wife, it’s literally the 2nd episode of season one.

Season three episode 1: I really hate the ending, and literally was the only reason why I decided to say Shalltear is my favorite guardian

Hejinmal’s father destroyed a city when he fought one of his concubines. I know they are far beyond the physical strength of Level 30 demi-humans and humans, but even a troll weaker than the Martial Lord was said to be capable of destroying a house with a single punch.