South Korean AI company Wrtn Technologies has shifted its initial AI writing and chat tool towards interactive storytelling application Crack and character dialogue business, aiming for approximately $70 million in annualized revenue by the end of 2025. The company states that AI entertainment products like Crack in Korea and Kyarapu in Japan are driving rapid revenue growth, with a target to exceed $100 million in annualized revenue by 2026, and plans to enter the U.S. market by mid-2026, with an IPO potentially starting as early as 2028. Wrtn's core product logic allows users to act directly in natural language, setting identities, appearances, character relationships, and story worlds, while the AI generates subsequent plots and maintains narrative continuity. Founded in 2021, Wrtn initially focused on chatbot aggregation and AI writing services, later integrating large models and acquiring users through a free usage strategy, including opening access to models like GPT-4 for Korean users for free. After launching the Korean version of Crack at the end of 2024, the company operates character chat and continuous plots as independent consumable products; Japan uses the Kyarapu brand, and the U.S. is preparing to enter the role-playing user group under the OOC brand. Wrtn's payment mechanism is designed around generating the next segment of the plot, with users purchasing character responses and story progression through in-app currency; the company previously disclosed that its character chat service achieved approximately 1 billion KR