Which AO3 Alternatives Allow Mature Content Safely?

Avla, a shy 17-year-old girl, is trapped in a life of torment and abuse. Her days are filled with fear and longing, overshadowed by her tyrannical father, Yorgan. But her world begins to crack open when she catches the attention of the mysterious Alpha Gideon, a mature and enigmatic leader who seems to watch her every move. Why does he linger around her school? Why are his eyes always on her?

Maya’s world shatters when she discovers her husband, Daniel, celebrating his secret daughter, forgetting their own son’s birthday. As her child fights for his life in the hospital, Daniel’s absences speak louder than his excuses. The only person by her side is his brother, Liam, whose quiet devotion reveals a love he’s hidden for years. Now, Daniel is desperate to save his marriage, but he’s trapped by the powerful woman who controls his secret and his career. Two brothers. One devastating choice. Will Maya fight for the broken love she knows, or risk everything for a love that has waited silently in the wings?

After completing my mission, I married the man I had been trying to win over. On our wedding night, I told him that the system had given me ninety-nine regret pills. Whenever he did something that hurt me, I would take one. Once all the pills were gone, I would completely leave his life. He held me close and promised he would never give me a reason to regret being with him. Three months into our marriage, his childhood sweetheart came back from abroad. The first time he stayed out all night, he realized that I would quietly take a pill after just crying once. After that, he began to act without any restraint. Ten years later, on our anniversary, his childhood sweetheart threatened to kill herself again. He left me without hesitation to handle the situation. The next day, he returned with his neck covered in love bites and begged for my forgiveness. I did not cry. I looked at him calmly and asked, “Can I take one of the regret pills?” He shrugged as if it did not matter. “Go ahead. There are plenty left.” I smiled and let him bring her into our home. He did not know that there were only three pills left in the box. Once they were gone, I would leave him for good.

They were brothers, one touched my heart, the other ruined it. Ken was safe, soft, and everything I should want. Ruben was cold, cruel… and everything I couldn’t resist. One forbidden night, one heated mistake... and now he owns more than my body he owns my silence. And now Daphne, their sister,the only one who truly knew me, my forever was slipping away. I thought, I knew what love meant, until both of them wanted me.

Life has a way of awakening us…Often cruelly. Astraia Ilithyia, a humble art gallery hostess, finds herself pulled into a world she never would’ve imagined existed. She meets the mysterious and charismatic, Vasilios Barzilai under terrifying circumstances. Torn between the world she’s always known, and the world Vasilios reigns in…Only one thing is certain; she cannot survive without him.

At the age of twenty, I mated to my father's best friend, Lucian, the Alpha of Silverfang Pack despite our age difference. He was eight years older than me and was known in the pack as the cold-hearted King of Hell. He was ruthless in the pack and never got close to any she-wolves, but he was extremely gentle and sweet towards me. He would buy me the priceless Fangborn necklace the next day just because I casually said, "It looks good." When I curled up in bed in pain during my period, he would put aside Alpha councils and personally make pain suppressant for me, coaxing me to drink spoonful by spoonful. He would hug me tight when we mated, calling me "sweetheart" in a low and hoarse voice. He claimed I was so alluring that my body had him utterly addicted as if every curve were a narcotic he couldn't quit. He even named his most valuable antique Stormwolf Armour "For Elise". For years, I had believed it was to commemorate the melody I had played at the piano on our first encounter—the very tune that had sparked our love story. Until that day, I found an old photo album in his study. The album was full of photos of the same she-wolf. You wouldn’t believe this, but we looked like twin sisters! The she-wolf in one of the photos was playing the piano and smiling brightly. The back of the photo said, "For Elise." ... After discovering the truth, I immediately drafted a severance agreement to sever our mate bond. Since Lucian only cared about Elise, no way in hell I would be your Luna Alice anymore.