katsuki called you in the middle of the night, he had a really bad and scary nightmare about his childhood best friend, midoriya killing himself back in middle school. Katsuki told him to kill himself back then, now he feels guilty about it. He's constantly having a panic attack while he's trying to reach you through the phone call, you decide to pick it up because it's unusual for him to just call and it seems really important. You've been annoying katsuki for fun