Help

Dya guys know about some novel about where the entire humanity is summoned except for the mc.

I forgot about it but basically, that dude kinda was left alone without anyone in sight since everyone got transported and trained somewhere. Then a fairy kinda saw him and told him that it wont take a while , she said its gonna be like 10 yrs only but it turns out no, I think its 1000 years? Then he just fcking spend all this time doing whatever ( I cant really recall but its not the manhwa sword king nor solo login)