JoJo's Bizarre Adventure: Did I Reach Heaven from the Start?

(The worldbuilding is primarily based on JoJo's Bizarre Adventure. The story does not cover Parts 7 or 8. It draws inspiration and some settings from the game Eyes of Heaven. One heroine, no harem, and a chance to save those whose fates left readers wishing things had gone differently.) “You say I have a soul like gold?” After dying to save a girl, Qiao Liang learns that he possesses a soul as golden as gold itself. At first, he doesn't care about it. But after gradually adjusting to life in Heaven, he is reluctantly drawn into a crisis that threatens it. “The truth of Heaven is beneath me now! Ascend beyond Heaven! The World!” DIO transcends Heaven, takes control of the truth of the Myriad Worlds, and brings the cycle of reincarnation across all worlds to a halt. Qiao Liang, who has only just arrived in Heaven, shoulders the hopes of everyone and enters the cycle of reincarnation to find a way to save Heaven. (There will be nine transmigrations in total, so this isn't an endless-worlds story. The full outline and ending are already set. Six of the worlds are not JoJo's Bizarre Adventure, including Demon Slayer, Fate, and Naruto: Shippuden.)