Lost His Memory and Became a Pokémon Trainer Again

My name is Ayan, I have lost my memory I just remember everything there is to know about Pokémon. But he has forgotten his life experience, his relatives and friends, and his former Pokémon partners, including every battle, every play, every travel and all the places he has seen. I want to retrieve these lost memories, and even embark on the adventure of a trainer again. I have been confused, helpless, negative, lonely... But I met Beiluo and Xiaolan. They gave me a home when I was helpless. They let me know that smile is the medicine for everything. I also met Slowpoke, who was my first and most trusted companion. And my first encounter with it has to start with when I woke up and found its tail stuffed in my mouth...