Every morning started the same way.

I woke up with my father's cock already pushing into my mouth. He didn't ask. He just grabbed my hair and fed it to me while I lay there half-asleep, throat open for him like always. "That's it, take it all the way," he grunted, hips rocking steady until he flooded my mouth with hot cum. I swallowed every drop because that was the rule. Free use meant I stayed available, no questions, no clothes in the house unless he said otherwise.
My older brother came in right after. He flipped me onto my stomach and shoved his dick straight into my pussy without warning. I was still wet from the night before, so he slid in easy. He fucked me hard and fast, slapping my ass with every thrust. "Fuck, your cunt is always ready," he groaned, pounding until he pumped a load deep inside me. When he pulled out, cum leaked down my thighs. I didn't wipe it up. No point.
Breakfast was on the table. Mom sat there eating like nothing was happening while my younger brother bent me over the counter and rammed into my ass. He liked it tight and dry at first, stretching me open with short, brutal strokes until I loosened up. "Goddamn, sis, you're the best free-use hole in the house," he said, gripping my hips and slamming in balls-deep. I moaned around a mouthful of toast while he came, filling my ass. He left me dripping there and went back to his cereal.
The day went on like that. Whenever one of them got hard, they used me. Dad called me into his office after lunch and had me ride him in his chair. I bounced on his thick cock, tits swinging, while he checked emails. "Squeeze that pussy for me," he ordered. I did, clenching around him until he shot another load up into my womb. My brother walked in mid-fuck and waited his turn, jerking off while he watched. As soon as Dad finished, my brother bent me over the desk and fucked my cum-filled pussy from behind, adding his own mess.
By evening I was a mess of cum and sweat. Mom finally joined in. She had me kneel between her legs while the guys watched TV. I licked her pussy slow and thorough, tasting her while she held my head in place. "Good girl, eat Mommy's cunt," she murmured, grinding on my tongue. One of my brothers came over and fucked me from behind while I did it, his cock sliding through the mess already inside me. He finished quick, then Dad took his place, stretching my ass again while Mom came on my face.
Nighttime was the busiest. They all took turns. Dad fucked my pussy while my oldest brother used my mouth. The younger one waited, stroking himself, then slid into my ass the second Dad pulled out. They passed me around the living room like that for hours. I stayed on all fours most of the time, holes open and dripping. Cum ran down my legs in steady streams. Someone would push back in whenever it slowed.
Around midnight they finally let me rest, but not before one last round. All three of them lined up and took my pussy one after another, each adding another load until it was overflowing. I lay there on the couch, legs spread, cum pooling under me. Dad patted my ass. "That's my good free-use girl. Same time tomorrow."
I smiled, sore and satisfied, already knowing I'd wake up with a cock in my mouth again. That was the deal. I was the family fucktoy, always ready, always wet, always theirs.