My Little Pony: I Came from the Abyss to Equestria

When Jiang Mowen, no, Mowen Wenjun, regained consciousness, he found himself in a world called the Abyss, and his appearance was distorted by the Abyss, no longer resembling his former human form. When he finally managed to escape the abyss, he unexpectedly encountered two alicorns he used to know very well. However, it seemed that his memory was now distorted? (Not a dark fanfiction, single female protagonist Twilight Sparkle, no system)