
I forgot about that, but I suppose he was testing his limits or accommodating him to the pain of dying. I really think that he's the alien that Akira is supposed to take his revenge on.
Him aside, I can't stop thinking about Akira's alien being a "momma's boy" and him being a "daddy's boy". Which would mean that they could have been twins or that the alien interacted with the family before the mom "died" and possessed their son to protect him or just that he needed a host. He seems to have memories of their mother even from before Akira's birth. I'm really curious about him. I want to see him in the next chapters ╥﹏╥

For now he hasn't seemed very interested in Akira, he just let him live his life. My theory is that they must have been close in the past but Akira forgot about his existence after a traumatic experience (prob mom's death) or perhaps "Akira" was the result of a promise made to his mom so that he could live a life free from the alien cops. He also seems fixated on the moment their mom was pregnant, so maybe she died of childbirth afterall and since he's an alien, he remembers all those moments
Hot take but I seriously dislike amamiya like idk he's just so off putting and VERY annoying