Big but Softy seme

Looks tough but softy inside.
Slow burn and intense story with Complicated relationship and mystery surrounding. The art style too goes so well with the story.

"Someone's tattooing me in my sleep". On the night of his birthday, Xin, the sole heir of the powerful Zhou family, reunites with Lau, his clan guardian, and confides in him about the mysterious tattoo forming on his back. Lau begrudgingly sets off to investigate this strange phenomenon, but what secrets will he uncover along the way?