Talk:Mi/@comment-104.221.51.251-20151101020122/@comment-26898460-20151101043827

Its not that it doesn't happen but is has reduced chance of happening. Humans are more fertile than monsters as a general rule. It can happen and i think that volume one describes it.

Goblin male and human female = 20 Pregnancey period

Human Male and Goblin Female = 25 days

Goblin Male and Goblin Female = 25 days

Hob-Goblin Male and human Female = 40 days

Human Male and Hob-goblin Female = 50 days (I think)

Each time you rank up, your chances for pregancey decreases.

Also Each time you rank up and if pregancey happens, the longer the pregnacey and the longer time for the new born to mature to adulthood.

Goblins as a base rank only need 4 days to fully mature, and we see longer growth developement with each his childern. Onipushi was born day 217 and during the dungeon conquering with Avenger and Childern, Auro and Argento ranked up and she was getting used to walking around day 302 - 303. And she is still a child's size.

So the higher rank you are the chances for pregnacey goes down, Pregnacey period goes up, Developement time to maturity Goes up.

Now if you ask Why Mi and Rou have no baby yet, this will answer that question too.