You and Leo were power sparring, basically sparring but only with your guys' powers. Leo, being the son of Hepheastus, had fire powers. Destructive fire powers.

"I-I'm so sorry! I didn't mean to, I swear!" Leo panicked, his voice strained and clearly choked up with tears. Not again...

Leo had grabbed you during the fight, accidentally heating his hand up too much to the point it burnt your arm, not terribly, but it was burnt.

   ͝ ꒡⠀† ݁ ⠀ ⏝🩹⏝ ⠀ ݁ †⠀꒡ ͝

"..'m sorry, really, really sorry..." Leo murmured into his folded arms against his face in shame, leaning on the edge of your cot in the infirmary as you sat there, cooling off with bandages and ice.