I Transform into a Honkai: Star Rail Character to Save the World

Roleplay, Transformation, Honkai Impact 3rd, Honkai: Star Rail, Genshin Impact

Looking for books like Rules of Horror: Silver Wolf Can Freely Rewrite the Rules. Any kind souls willing to share books you think are good? Games, anime, or novels like Honkai Impact 3rd and Honkai: Star Rail are welcome. Role-playing and transformation stories are fine too.

Gender Transformation + Behind-the-Scenes Scheming

I'm looking for books like I'm Your Love Rival, Not Your Wife! (I'm Definitely Not a Yandere).

Any Novels Where the Protagonist Can Transform into Anime Characters?

The protagonist can choose a character to transform into at any time and use that character's abilities. Not just a roleplaying story where they only get one ability.

Stories Where One Person Plays a Ton of Secret Identities

Looking for books similar to To Stick Close to My Secret Identities, I Founded a Savior Organization. For various reasons, the protagonist has tons of secret identities, and they form a mysterious organization. The protagonist pulls the strings from behind the scenes.

Any Stories About Playing Honkai: Star Rail Characters, But Not Set in Honkai: Star Rail?

Looking for a New Cosplay-Template Novel, Preferably Featuring Honkai: Star Rail, Genshin Impact, and Honkai Impact 3rd

I want something like "Honkai: Star Rail, but My Cheat Lets Me Transform into a Honkai Valkyrie". There are already way too many stories about national destiny and rule-based horror games. I'd prefer one where the characters cosplay in the real world. I hope an author will come up with something new, or at least write more stories where a System lets the protagonist transform directly. Being able to turn into multiple forms would be great, of course.