i kinda get the feeling that valcan was mc on his last run on the game where he got to the end boss room

the body would be perfect if it was trained but it was so little trained that after a few sword slashes he is out of breath and the body didnt have even a little bit of mana and he didnt have enough time to train unlike in his old body where he trained his whole life and he probably made that his main sword art after a lot of training and it doesnt work in the new body because he does it when he is too young (and i dont know if you would call it the perfect body if it has dies when it is below 30 yo without doing anything)

he was part of the 3 people who got send there by the person that said something only loki knows and the other 2 were not good enough to be recognised as their master ig

if that were still one wish then he could say "i wish to return to a past where there was no heavenly demon" but that would be 2 wishes same as your wish so it wouldnt work

almost 2 billion people got pulled into another world half of them died instantly and the other half got super powers but yeah the lottery is the weird thing

but everyone got the same quest and with that you can only get level 5 so they would know that it isnt a skill

it may be his past self when he crawled to the stone that resets time

thats what they showed when the weapon arts were introduced "if the attacks stack everyone would run arround with as many weapons as they can carry" or something like that

but in this game like scenario dual wielding is the best option he has the weapon arts so the damage stacks and it doesnt matter how he attacks it is a set amount of damage

https://i.postimg.cc/zGSJSPbB/i.png

https://i.postimg.cc/LXk7GrSY/i.jpg

same picture