I seriously believed that Ru-da was a guy throughout this without reading the comments. I wasn't even 100% sure if he was, but I just assumed that based on how they portrayed him. I thought he was actually a guy and Dan-i was just oblivious because in her mind its still a cliché web novel. I didn't realize that saying and thinking he was a guy was a spoiler cause I thought that was the intention of the story was to make us think he was a guy. I guess we know for sure now?