This weekend I bought the chapter one of the manga: "TRAPPED IN A DATING SIM: The World of Otome Games is Tough for Mobs". That's a looong title.
It started out as a light-novel, then watered down to a manga and now watered down to an anime - which will come out soonish.
Plot
The story begins when the office worker Leon Fou Bartfort dies and finds himself reincarnated in an
Otome game that he was forced to play by his sister. Specifically, he's reincarnated into the Holfort Kingdom of the
Otome game world, one where women reign supreme, particularly tough for 'mobs', background characters like him. The plot revolves around Leon disrupting his world using his knowledge of the game from his past life, finding a cheat item Luxion and enrolling in the Holtfort Academy. He attempts to live a normal life but through his actions he gets embroiled in all kinds of plots, while mingling with the royalty and other characters of the otome game.
So why would a guy buy a manga about a dating-simulation for girls/women? Well, it's a Japanese guy re-incarnated in a world-game. He retains his knowledge of the game he was playing, so he has a grasp of the world mechanics and starts events out of order. It is a shonen though, so combat is a big part of the story, but so is actions-have-consequences. And as his timeline diverges from what is happening, it gets harder to predict what to do. The protagonist is not that likeable, but I guess it's because he feels he's in a game, not in real life. I found it hard to know who was who and had to backtrack a few times to find matching clothing and hairstyle to know who it was. The worldbuilding was cool.
Other stuff
If you want to get depressed and sad, read "takopis original sin" - It's still about a cute octopus, but man... and if you read the first chapter, also read the second one because that one ends on a better note, sort of.