Kang Seojin, a burned-out broadcast writer, wakes up inside the BL novel he was reading — possessing "Lee Hyun," a side character who has feelings for the main shou. His plan is simple: stay low, let the main couple get together, and figure out how to get home. But his naturally warm, cheerful personality keeps getting in the way. "Are you doing this knowing I'm okay with guys too?" Without even trying, Seojin ends up attracting not just the main shou — but the main gong, and even the gong of the sub-couple. A man who has no interest in BL conventions somehow becomes the center of everyone's attention.