I can't remember the title but I was wondering if it is already completed or what.
The mc has a long silver/gray hair and very funny he has no memory of what he was like in the past. But as the story goes, he was actually a terrifying kid with a power manifested in him, he was under the care of an alien and he was along with kids with suspicious trait one of them who has a freckles has this centipede type of characteristics? And the other one is a blond where the mc paralyzed when they were young. And now both that blond kid and that centipede kid was looking for him only for them to realize the mc has no memory after he was thrown out the spaceship.
You can try: https://www.mangago.me/tag/silver hair/ or search it on the All genre category by excluding topics! I hope you find what you are looking for.
Ain't slashing the end game troupe but let's commend Jo's thinking and decision-making. He's very mature, very emotional intelligent cause despite that it's a very hard decision for him to let Ian go, he still made an important move because he loves him. Jo, you are loved and always be<3
(Edit: I didn't know there's going on with the other Jo stans–doxxng real people is bad guys. Let's focus on the story and the essence of it. Be it known that this is only fiction, don't let it get into your heart)