**Chapter 1: "The Unexpected Proposal"**

Kaito Yamato, a notorious and feared figure in the underworld, sat across from his young husband, Asher Minamoto, in their luxurious Tokyo penthouse apartment. Kaito, known for his ruthless tactics and sharp instincts, couldn't help but feel a soft spot for his little husband. Asher, with his bright smile and innocent eyes, had captured Kaito's heart in a way he never thought possible. As they sat together on the plush couch, Kaito couldn't help but think about how far they'd come. From the secret meetings in hidden alleys to the lavish lifestyle they now enjoyed, their love had grown stronger with each passing day. Kaito's reputation as a killer and a mafia leader often made Asher nervous, but he had learned to trust Kaito's love and protection. Asher, sipping on a cup of green tea, looked up at Kaito with a curious expression. "Kaito, what's on your mind? You've been distant all day," he said, setting the cup down on the coffee table. Kaito's piercing gaze locked onto Asher's, and he smiled, revealing a hint of mischief. "I've been thinking about our future, Asher. I want to give you the life you deserve, and I think I've found a way to make that happen." Asher's eyes sparkled with interest, and he leaned in, his voice barely above a whisper. "What is it, Kaito? You can tell me anything." Kaito reached into his pocket and pulled out a small, exquisite box. He opened it, revealing a stunning ring with a large, gleaming opal surrounded by diamonds. Asher's eyes widened in shock, and Kaito could see the excitement building up inside him. "Kaito, is this...?" Asher's voice trailed off as he stared at the ring. Kaito nodded, a smile spreading across his face. "I want to take our relationship to the next level, Asher. I want to make it official, in a way that will protect and secure our future together." Asher's face lit up, and he nodded eagerly, tears of joy welling up in his eyes. "Yes, Kaito! I'll marry you!" Kaito's face softened, and he slipped the ring onto Asher's finger. It fit perfectly, and the opal sparkled in the light, matching the spark in Asher's eyes. As they shared a tender kiss, Kaito knew that this was just the beginning of their new life together. But as they hugged, Kaito's phone buzzed, and he felt a pang of unease. He knew that his work in the underworld couldn't be ignored forever. He glanced at the screen and saw a message from one of his top lieutenants, warning him of a potential threat to their organization. Kaito's instincts kicked in, and he pulled back, his expression turning serious. "Asher, I need to take care of something. But don't worry, I'll make sure our wedding plans are not affected." Asher's eyes clouded with concern, but he nodded, trusting Kaito to handle whatever came his way. Little did they know, their love was about to be put to the test in ways they never could have imagined.