(Re)mission

It's Sapnap who pointed it out. On stream, too, when they're arguing about who would win manhunt in real life.

"But here's the thing. Dream bruises really easily. No way someone that bruises like that can win."

"I do not!" Dream rolled up his sleeves. No one else could see it, but he still wanted to prove it for himself.

What he saw made his stomach drop.

AKA Dream is a childhood cancer survivor. He hides it to forget, but familiar bruises and aches start coming back, and he's not so sure how much longer it can be a secret.