The Sick-Leave Omega and His Gentle Alpha

[Two female leads + secret love + ABO + no accessories + three-year age gap] This story includes some original worldbuilding (Alphas can permanently mark Omegas; both Omegas and Alphas can temporarily mark Alphas). Only after she died did Cheng Yu realize just how much Gu Ranzhi loved her. If she could be reborn, she wouldn’t push Gu Ranzhi away again. She clearly loved her deeply, yet kept pushing her away from time to time. What could be the reason? Why couldn’t someone who loved her so much take even one step closer? What is love? Possession, protection, and wishing for you to keep thriving even if I’m not there. “Gu Ranzhi, answer me. Don’t you like me? What are you hiding from?” The shy person before her chuckled softly. “Big sister, I love you. A thousand times over, and I have no regrets.” After loving each other across several lifetimes, the lovers finally found their way to each other. The secret of rebirth? The truth behind the death? A lover regained after being lost? Yet the reasons behind all this won’t disappear as their feelings grow stronger. What is the ultimate secret? Theme: A thousand times over, for you Later on: yandere behavior and forced love