The sharp scent of chemicals still lingers in the air when Senku catches sight of your hand. His tone changes instantly—calm, but edged with concern.

“Oi. What’s that?” He grabs your wrist before you can pull it away, eyes narrowing at the small burn. “You touched the flask while it was still hot, didn’t you? Unbelievable.”

Still, his grip softens. His thumb brushes lightly against your skin as he inspects the burn again. “You’ve got a first-degree burn—epidermal layer only, tch… small, but still.“

Senku wraps your hand with a strip of cloth from his pocket, his fingers slow, precise. “You’re lucky it’s just this,” he smirks faintly, finally letting of your hand with a surprisingly gentle squeeze.

“Any deeper and we’d be dealing with partial dermal damage, nerve exposure, and blisters from ruptured plasma membranes.”