Harem in the Fantasy World

Hayashi akiyama died on his way to dropping off a package and was transported into an anime that he had been watching before expiring. Now that he is in the place of Kaga Michio the Og main character, how will Akiyama handle the situation with the little knowledge he has of the plot? Note: > Fanfic will be more focused on a little bit of character development, world building, and lemon-filled dungeon raids. > Everything, with the exception of my OG character, belongs to the original creator.