I couldn't sleep so of course I came up with an Idea for a Fic I'm Not Writing
Based on those isekai anime's but specifically the one I watched Yesterday 'I'm the Villianess so I'm Taming the Final Boss.'
Sanji gets thrown into the dating sim he was playing before he died. As the character he most hated - the desperate, clumsy 3rd prince of a visiting royal family. The one who bumbles his way into every romance arc and fucks things up - not even on purpose! So, having played through all the romance routes, he figures the best thing he can do is stay out of them. Most of the romanceable characters have 2ndary love interests that they'll fall for and be happy with if the Protagonist doesn't choose them.
All except the one romance path Sanji was never able to finish bc the character was the most annoying and pointless: the guard captain and Knight of the Realm Roronoa Zoro!
(Zoro being the gay romance option, and Sanji never having figured that out bc he is 1. An idiot who was shocked when Nami's canon unchosen romance path was Princess Vivi and 2. Never got that far with Zoro bc he kept triggering fights and racking up bad karma points.)
Then - idk, maybe they awaken a special subplot that was never in the game or else have to face off against Another Protagonist
There's a lot of fun that can be had with the nature of reality in isekai fic