Well yeah it is kind of fast, but then again I believe it was explained in the early chapters that demons progress and mature at a faster rate than humans until they reach adulthood and then they slow down.
It is kind of rushed but considering the plot it kind of makes sense....I guess? I know it is kind of weird at how fast the mc's babies are maturing but I am mainly here for the cute kids ╮( ̄▽ ̄)╭and the fluffy romance of the mc and demon. ε=ε=(ノ≧∇≦)ノ
Despite the fact the mc can act a bit too naïve and foolish for my taste but overall I do like this manga even with the abnormal weirdness that pops up in the story such as the hero's mage making ( or was she a wizard? Can't remember right now.)a COOKIE that has a spell in it to make the woman PREGNANT if she shares the cookie with a man. Σ(っ°Д °;)っ
I can only hope the hero is careful around his party members because they are CLEARLY trying to gain his affections are desiring to bear his children without his knowledge and consent. Hero-san all I can say is you better be CAREFUL and READY because you have a pack of mating-hungry wolves lying in wait at your feet and are ready to pounce on you at any given second. Σ(  ̄□ ̄||)
there growing wayyy to fast
I was like isn't an too meture for her age?
just the next page her brother spoke (⊙…⊙ )