Help find the alt name

Saw an instagram post about a bl named "Even in your death". I can't seem to find it here. Apparantly the bottom is black flag and the top is red but the comments convinced me to read it. Is there another name to it? The bottom has greyish black hair and purple eyes, top has reddish brown hair.. one of their names is cheol. That's all i remember. The post vanished when i went back to it.(Typical instagram) （￣へ￣）