Okay, before everyone starts posting your recommended title. What I am mainly looking for are those that had either used Anime/Manga reference or just crossover or in a system granted story. One of a few examples is Shift! The Side-Character Heroine, Shoujo Grand Summoning, Hokage: Ryo's Path, and In Different World with Naruto System. So I hope for everyone's cooperation, also please include what Anime/Manga they are using because some of the novel's title doesn't tell what anime/manga they are using. Illimitable Until Death is one of those examples. If it's multiple crossovers then use Multi x-over just to make it simpler.
https://www.fanfiction.net/u/10208099/Sir-Lucifer-Morningstar Sir Lucifer has several SI (with a system type cheat) in different franchises like Naruto, BNHA, Marvel or DC. If you squint a little, you should be able to treat it as just the same guy fucking around in different universes. While he is known to write high-quality works, he is also sorta infamous for being quite liberal with the use of gore, sexual content, or even rape so I'm gonna leave this warning.
Could you PM the titles so that I can avoid reading it. Anyway, know any other good story? One that could be found here in novel updates.