There was this anime with like a ship in the sky, all I remember from it is a group of people like a class chasing after this one guy or all running fighting eachother with different abilities (maybe not exactly powers). I remember there being a woman singing a childhood song to a little girl next to a grave or to a robot girl on a bench, it had a second season supposedly and used to be on hulu.
It’s very hard to describe as I remember very little but I believe there was a school on that ship like just a mini thing where some of the group members of the main cast would be in a class and I remember a point where they had something break out of a container so a couple could see it and or fight it. Right now all I got to go on is it was like a white haired central character. I think the cover of the anime had the group in it or a far away ship. I cant tell if it was an aircraft or an actual ship.
They were all jumping over like one story buildings in their little tag kinda game thing, and it was a more modern drawing style. I think the main character reminds me of the guy from KK anime.