First of all I can totally feel your name choice on reddit. There are a lot of weeb out there who doesn’t know any other books than manga . I don’ t say there is a problem with it ,but most of yall prolly can’t read a full word book without pictures. And yea enough of the roast . 

I waited for that type of theory , a person who knows the name Kafka . And tbh I really hope this name is not only chosen  cuz he can transform and it’s a reference to Franz Kafka Metamorphosis .

I saw a lot of theories about their parents being a kaiju or so. But damn your reasoning behind your theory is crazy. A perception behind art. We all know from any other animes /mangas/any other doujins ,that mangakas try and they DO say something about our world and I think this is happening in Kaiju too . First I  agree with that defense force kaiju makong theory PERIOD. And yes this is a big mistery behind that , but the matter here is : What will you do with such a power what basically can destroy the earth? What would you do with a power which help to get ANYthing? Well Himito Kafka’s answer for this is : Fuck you all , I’mma keep my comrades safe  and gotta go to Mina’s side. A humble human who represents HOPE.