>>535528342

Again you are missing the point , the series which first used the 'levels' as a narrative element and established the trope was rance in 1980s and narrou syosetsu website was literally made to make fanfics.

A large amount of isekai authors were actual eroge readers or authors who took inspiration from various nasu stuff, muv luv, rance etc.

There is a reason why people don't even know that even mainstream anime were like aot was also inspired by eroge