I've become a sucker for this otome game (mostly fantasy) novels with male protagonist, I'm easily hook when the MCs are interacting with the villainess, damn man's romance out there. example: Endo and Kobayashi's Live Commentary on the Villainess Otome Game no Mob desura naindaga Otomege Sekai wa Mob ni Kibishii Sekai Desu The Villainess's Butler ~I Raised Her to Be Very Cute~ Jishou Akuyaku Reijou na Konyakusha no Kansatsu Kiroku or at least similar to them example: Spice and Wolf what matters for me is character interaction and how their relationship develops
Reincarnated in Otome game as love interest Guy dies and reincarnates into the game his sister played. He adores the villainness while the "heroine" is busy succubus-ing it up. Debt Girl Not a transmigration story. Girl is from fallen house while the MC is a low ranking noble night. She's not a 'villainess' but her father was a traitor and MC had a bad misunderstanding of her in the past. He protects her while baddies are looking for her. Observation record of Villainess Fiancee The girl is the one who transmigrated, but she's an idiot but in a charming way. MC is the prince character who is overly competent and is bored with everythint, finds her amusing. Villager A wants to save the villainess Guy transmigrates into game and woos villainess away from jackass capture targets. I don't think it's tranlated very far but the raw is very MTL-able. The first few arcs show him just getting OP before he follows the villainess to an academy. I Favour the Villainess Not male protag, yuri. However, it's very well written, has a great story, and is quite a long read.