That time I reincarnated in Overlord??

Arthur, our resident Earthian suddenly gets reincarnated in Overlord's Earth 2138 1 year after the release of Yggdrassil the best VRMMORPG.
Knowing the future of Yggdrassil, he becomes the top ranked player in Yggdrassil and with some privilege points form the devs gets broken.
After 12 years of the game's release, he stays in his Guild, The Orion ready to catapulted to the New World....or is it?

The Guild gets transported to the familiar but unfamiliar world where dragons roam, the ten demonlords holds tea parties and a certain Blue blob tries to create a country of monsters. Yep! It's the world of Tensura!

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A side note: This story is set hundreds of years back, so it will be long before the plot of the Anime Starts.

Also this will be an AU of sorts, changes are bound to be included. I wanted to keep the original plot till Rimuru becomes a slime.

This part might be generic but I must remind you, whatever Rimuru has, Bael would have tenfold, so he won't bother taking anything from Rimuru. But he will meet with Him.