ok but vmin au where taehyung can see numbers above people's heads which show the days they have left before they die. years pass and he's mostly learned to live with it, at least until he meets jimin: his cute new roommate who has a startling zero but is somehow very much alive. it goes like this:

taehyung is six when he notices the light blue squiggles floating over his mother's head. he asks her about it but she just smiles, turning the question back at him and making him go on a tangent, until all talk of blue squiggles fade into that about school.