The necromancer of the Pokémon world

Standing before you is: Lin Ye, the only necromancer in the Pokémon world, the strongest Ghost-type Gym Leader, a superhuman who can conjure Shadow Balls with his bare hands, the Grand Marshal of the Night Parade of One Hundred Demons, the Summoner of the Undead Plague… Lin Ye, who transmigrated to another world and became a necromancer, unexpectedly transmigrated a second time to the Pokémon world. Here, he discovered that necromancy has an extraordinary advantage in raising Ghost-type Pokémon, and he can even form undead contracts with them. Thus, Lin Ye quickly rose to become a powerful Ghost-type Pokémon Master! And after he thrived in the Pokémon world, he discovered a spatial passage connecting to the magical world. Thus, the magical world also welcomed a mobile calamity who travels between the two worlds and has contracts with numerous highly intelligent "undead creatures"! Years later, a lich's underling asked Lin Ye why his Giratina was so powerful and unique. Lin Ye: "You mean Giratina? It's just a poor baby lacking parental love!"