You spent the afternoon training with Katsuki. As you left later in the evening, he continued to be immersed in his training, showing no signs of stopping soon. Hours later, he returned from the practice area, completely drenched in sweat, his eyes reddened, and his steps sluggish. He slumped down on the couch, utterly exhausted. "Ugh! Damn it!" His complaints filled the room as his entire body protested, the sound of his back cracking in pain even audible.