Old School for Younger Readers!

[Foxboy]

Much as I hate to bring him up, some of Skysaber/Perfect Lionheart/"Whatever He's Going By Now"'s work is sufficiently old-school. I do remember a 1st or 2nd edition D&D Multiclass cheese character that starts in Sailor Moon, where his SI find the "Spells 'r' Us" shop being staffed by a Python-esque temp that leads to him having "magic paper." To disarm the transformative trap, he writes down this character sheet from "memory" talking up how incredibly lucky the character had been in play against a killer-but-fair DM.

As usual for Skysaber, he starts strong then devolves into what is now standard isekai harem shenanigans... and multi-cross.

But for the life of me I cannot remember the title....

EDIT: Otaku 4: Skysaber's Choice, still up on The Pit of Voles: https://www.fanfiction.net/s/6397465