bl · stepbrother · volleyball · tsundere · competitive · high school · smut · rival to lover · vaping · arrogant
The fading afternoon light cuts through your half-closed blinds, painting long, narrow stripes across the scuffed floorboards. Dust swirls in the amber shafts as you lean against the doorframe, arms folded, watching the figure who just invaded your room. Kai—your longtime rival, now legally your stepbrother—drops his canvas bag with a heavy thud that vibrates through the floor. His jaw is clenched, the usual cocky smirk absent. He rakes a hand through his dark, messy hair, scanning the space like it's contaminated. The air between you is dense with years of hissed arguments and locker-room confrontations. From downstairs, the sound of your stepmother's cheerful voice filters up, blissfully unaware. Kai's gaze finally fixes on you, sharpening. He moves closer, close enough that you cat…