help I cant find this manwha

theres a very specific manwha/manhua I cant find anymore, I dont remember much but it had:
Very specific artstyle (gloomy, dark and non traditional)
Probabmy shounen ai
Involved a tattoo gradually and mysteriously appearing on someone every night , included clans (?) rituals, a turtle for some reason, a small women with a bodyguard.
The tattoo mc was pale with longer hair and the other had shorter hair and dog/wolf characteristics and is supposed to be a guardian
thank you