Merging with Demon Spirits - Chapter 341 - 253: Demon Transformation

In the vampire-ruled kingdom of Mildelar, the Blood Games stand as the ultimate form of entertainment—savage battles between familiars, humans bound to their vampire masters through blood pacts. Far more than mere spectacles, these brutal fights determine the prestige of noble families, shaping their power and influence across the realm. Lyon, a young human saved from death by a blood pact with the alluring Arya Valakys—one of the king’s daughters—is unwillingly thrust into this cruel world. Bound to his mistress, he is forced into relentless battles to elevate her standing.Lyon, however, stands apart from other familiars. While they derive their strength from the fear of punishment, he draws his... from having dirty thoughts about his mistress!

The devil would love you only in his own way: “Remember, don’t look at me, don’t hold me, and don’t kiss me! Turn your face away, as long as you lie down obediently and quietly! ” Just lie down obediently? What did he take her for? An inflatable wife?

- Description from Novelupdates

A polite and lethargic boy was reincarnated in another world as a vampire bishoujo.

Seven years ago, at a charity gala, she unintentionally became his cure and ended up pregnant with fraternal twins.