I NEED HELP FINDING A BL

It was about this cute brown haired boy and he was always lonely and he would sleep with his hyung who had like a dusty blue hair color and all of a sudden the Mc ended up getting a step brother with dark blue hair and light blue eyes like the scary white people and the dark blue haired is basically a spirt that's keeping the bottom alive if you help me find this BL I'll suck you clean dry