Gatekeeper Of The Boundless World

while the story in many places feels very, very rushed, seemingly skipping from event to event in the blink of an eye, the story “was” interesting at the start, this door that can take the MC to another world and his interactions there seemed pretty decent.
Then later out of nowhere, suddenly the story swaps from what is was into a yugio/card game nonsense that just ruins the whole thing, as soon as the card game rubbish kicked in i tried to read on but just found the whole story totally idiotic with it veering away from the original theme of the story so i called it quits.