Ina's Questions (2)

So...I need to find this manhwa that is about a boy who is being blackmailed by his childhood friend for being gay, but now the childhood friend has got a girlfriend and the main character thinks he's gonna be free from the abuse. I only read so far and forgot to bookmark it (Yes, another one, it's a gift), I hope it's not a rubbish story because it seemed really promising

i read this manga a while ago, it was about a family of aristocrats who were seen as "perfect" in terms of blood, skin, etc. And chimeras/demons annihilated them to consume them. The only survivor, a boy made a contract with one of them, a demon woman, but only if the she killed the others there. I believe the name is no. something (the demon name,) but can't find it anywhere!