Responses
Translator here! Not rlly a spoiler:
It will be revealed a bit in chapter 26 which will come out soon I think.
In some panels we also saw how a woman is choking 647 which is most likely his mom.
Did I miss something or 647's past hasn't been mentioned? I'm just curious why the heck his parents don't even care about him.
Kinda wish 16 to do something to those bullies