Reborn as Mordred in the Multiverse

A young man is suddenly reborn into the body of Mordred and thrown into a hostile world. His luck changes when he obtains a system that lets him travel to different worlds and universes.

-This is my first story so I apologize for any mistakes I make
-I'm writing this for fun so don't expect consistent updates but I will try to put out at least a chapter a week
-I am open to advice and ideas
-This will have Yuri and a harem
-Possible R-18 chapters