It's Yu-Gi-Oh!, but I Have to Catch Spirits

Yu Yu, a card game enthusiast, was punched straight into transmigration and landed in the Yu-Gi-Oh! world he'd always dreamed of visiting. He thought this was the beginning of his path to becoming a legendary Duel King, but reality hit him with a punch of scrap metal.

[Loading successful! Welcome to the Dream Pokemon Training System!]

Getting a System should have been a good thing, but it left him deep in thought. How had he ended up loading a Pokemon System?! He had to catch monsters with his cards before he could play against other people?! No way!