Water Kanin: Glass Kanin, Book 3 (Unabridged) - Kia Leep

After phenomenally screwing up his attempt to get back to Earth and retrieve his body, Kanin now has to face the facts: He’s stuck on this world for good. Not to mention, stuck in a glass bottle. And stuck with a shadow monster tied to his soul. And stuck in a powerless submarine at the bottom of the ocean. Oh, and he’s also responsible for a hundred new souls from Earth getting spawned into the world. On the bright side, he literally can’t dig himself deeper from here.