I want to create an AI-powered character chat app called Afterglow. Users will be able to discover and chat with fictional AI characters, each with unique personalities, backstories, goals, flaws, memories, and speaking styles. I want the conversations to feel natural, immersive, and story-driven, with characters that have strong personalities, witty dialogue, emotional depth, conflict, and developing relationships. I am a beginner and would like guidance on how to start building this type of app in Adalo and how to connect an AI model/API to power the character conversations.