Endlessly Adored as the Evil Prince's Obsession: I'm Only a Background Character, but His Fingers Keep Driving Me Wild!

Synopsis

Reborn into a video game world as the ultimate NPC, daughter to an impoverished noble, Millie agreed to an engagement that would save her family... only for her husband-to-be to dump her in front of everyone at a ball. Enter Prince Ludger, famed for his overwhelming power and cruelty as well as his reclusive nature. He steps forward, his regal bearing and sharp gaze making all the guests cower... and then he kneels in front of Millie and says he simply must have her as his betrothed...!!! (Source: MangaPlaza)