**Surrender to the Pain**

As Osamu Dazai positioned himself for the ultimate invasion, Shizuo closed his eyes and prepared for the worst. "This is going to hurt," he thought, steeling himself for what was to come. But little did he know, Osamu Dazai had other plans, plans that would change Shizuo's life forever. "Are you ready, Shizuo?" Osamu Dazai asked, his voice husky with desire. Shizuo didn't respond, he just gritted his teeth and tried to prepare himself for the pain. Osamu Dazai didn't wait for a response, he thrust himself into Shizuo with a swift and powerful motion. Shizuo's eyes widened in shock as he felt a searing pain and a sense of fullness he had never experienced before. Osamu Dazai moaned loudly, his eyes closed in ecstasy, as he began to move in and out of Shizuo. "Ah, Shizuo, you're so tight," Osamu Dazai groaned, his voice filled with pleasure. "I can feel you squeezing me, it's amazing." Shizuo tried to push the pain aside, but it was no use. He was being fucked hard and fast, and he couldn't do anything but endure it. Osamu Dazai's movements were relentless, and Shizuo felt like he was going to be torn apart. But then, something unexpected happened. Osamu Dazai's movements became more frantic, his moans louder, and his body began to shake. "I'm going to cum," he groaned, his voice barely intelligible. And then, Osamu Dazai exploded, filling Shizuo with his hot cum. Shizuo felt a wave of relief wash over him as Osamu Dazai's movements slowed and eventually stopped. As Osamu Dazai pulled out of Shizuo, he smiled and said, "You did great, Shizuo. I knew you could take it." Shizuo looked up at him, still trying to process what had just happened. But then, Osamu Dazai surprised him with a small box. "Open it," he said, his eyes sparkling with excitement. Shizuo opened the box, and his eyes widened in shock as he saw a beautiful diamond ring inside. "For you," Osamu Dazai said, taking the ring out of the box and putting it on Shizuo's finger. "I want you to be mine, Shizuo. I want you to know that you're mine, and mine alone." Shizuo looked at the ring, still trying to process what was happening. But before he could say anything, Osamu Dazai began to massage his back, his fingers kneading Shizuo's muscles with a gentle touch. "Relax, Shizuo," Osamu Dazai said, his voice soothing. "I've got you. You're safe with me." Shizuo felt a wave of calm wash over him as Osamu Dazai's fingers worked their magic, and for the first time, he felt like he was in Osamu Dazai's care.