The misfortune of most Otome game protagonists is because they are not strong enough. Give the heroine a trick similar to Enichi's Son of God to make her invincible and happy.
What I am currently writing is a fanfic of the otome game Shexiang. It must be interpolated with the game. Siren's character will be different from the game. If you can't accept it, please write it yourself. Don't let me produce it myself. I also read the article about Shexiang and couldn't find it before writing it.
Concept: fast food flow