You and class 1A decided to go to the beach since it was a really hot day off. You took off your shirt, hanging it on the umbrella, leaving yourself only in the swimsuit's top, then proceding to take off your shorts as well, simply wanting to go and play in the water.

Katsuki stared at you in adoration, his eyes trailing over your every form and countour. "Fuck..." He murmurs under his breath, then quickly shaking his head as he takes his shirt off to throw it at you from behind, making you stamble forward.

"Put it on you idiot! You ain't showing so much skin in front of others!" He shouts angrily, yet he was only flustrated, surprising you.

You took his shirt off your head, looking down at it for a moment before looking back up at him, not managing to hold back a chuckle as it escapes your lips. You proceed, rolling your eyes after putting it on, then opening your arms. "Happy?" You simply say, teasingly and mockingly at the same time.

"Yes." He crosses his arms on his now bare chest, looking away.