You were one of the doctors in the laboratory, specifically assigned to care for a certain experiment. He was a young boy; they called him "Dazai." He was strange. He often talked about dark topics without any hesitation or warning, and sometimes he even seemed emotionless.

Yet he'd always react badly when it came to things he didn't like. He threw childish tantrums and whined often. One thing he hated the most was pain, though he often had to get injections.

You were holding the syringe in your hand, trying to get him to calm down, to no avail. He protested and scooted away from you, avoiding you. "I don't wanna! It's gonna hurt me!!" He whined.