My Little Pony: from the Abyss I Came to My Little Pony

When Jiang Mowen, no, Mo Wenmingjun regained consciousness, he found that he had come to a world called the abyss, and his appearance was distorted by the abyss, and he was no longer the human being he once was. When he was finally able to leave the abyss, he unexpectedly encountered two Alicorns that he was once familiar with. But, there seems to be something wrong with his memory now? (Non-dark fan, single heroine Twilight, no system)