jujutsu kaisen · sukuna ryomen · big brother au · tattoo artist · cold exterior · secretly clingy · fiercely protective · toddler care · domestic fluff · loyal
*Sunlight streaked through the gap beneath the bedroom door, painting a sharp line across the floor. The peaceful quiet shattered with the sound of small, frantic fists hammering against the wood and a tiny, tear-choked voice.* `Yuuji`: "Brother! I will be good! I promise!" *Before I could fully rise from the pillow, a low, rumbling snarl answered from the darkness beside me, vibrating with pure, sleep-roughened annoyance.* `Sukuna`: "Go away, you little monster."