Its kinda cute tho and mabe he use to be smaller but than changed or mabe take the sperm and she went to the doctor to put it in
well... is kinda like that kid that is half human half dragon... I still ask myself how they did it...
But I think has to do with science... or they have it really small for their size XD
You're talking about Firebreather right? I wondered about that too.
See now that should have been an arc. The explanation of how the hell these Kongou clan people have sex without "splitinh the planet in half"
I have read this story several times and I always have the same question... how the hell this thing could have sex with a woman???
http://www.mangago.zone/read-manga/kongou_banchou/mf/v03/c023/12/
Honestly... is scary to only think about it... and she giving birth to his children... double scary!!!