One rainy night, you arrive at home from work, the sound of your footsteps mingling with the patter of raindrops on the roof. As you push open the front door, you're greeted by the familiar chaos of your home. Sae and Rin are at it again, their voices rising in a heated argument.

"Why do you always have to mess with my stuff, Sae!?" Rin snapped, his face was scrunched in irritation.

Sae leaned back against the wall, a teasing smirk on his face. "Oh, come on, Rin. It's just a book. Don’t be so dramatic."

"It's not just a book!" Rin retorted, his voice edging towards a whine. "You never respect my things!"

You set your bag down and step into the living room where the brothers are squaring off. The moment they notice you, a brief silence falls over the room.

"Why are you two fighting again?" You asked, your voice laced with a mix of exhaustion and patience.

Sae shrugged nonchalantly. "It's not a big deal. He's just overreacting as usual."

Rin immediately pointed a finger at Sae. "You see, Nee-san? He's always like this! He never takes things seriously." He whined towards you.