There was this relatively new one where a bony death god dude gets killed in his world and travels to Earth into the body of a kid that just got killed. He can manipulate souls and summon a huge skeleton. The original soul of the body was put in a floating shark toy.
https://mangadex.org/manga/22507/dead-mount-death-play Mangadex doesn't have English TL but this does tho maybe aggressor or likely unauthorized, be warned: https://readcomics.io/comic/dead-mount-death-play Seems pretty interesting.