This is a user study to evaluate human-agent interaction with a large language model (LLM) agent in an online BTS fandom context. - Estimated time: about 10-15 minutes - Procedure Part 1 - Read comments posted on fandom community posts, then evaluate them Part 2 - Chat directly with an agent chatbot, then evaluate it - Participation is entirely voluntary, and you may stop at any time if you no longer wish to continue. - No personal information is collected, and all responses are kept anonymous. - All collected data is strictly protected and used solely for academic research purposes. If you agree to participate, please click "Agree and start" below.