Tomoko simply didn't realize SHE was the "guy" PC in the otome games. Which is interesting, right? IT's almost as big an oversight as the series title. What was she training herself to do with those erogames ? To seduce girls! Seen in that light, the current yuri harem is the most plausible. It fits completely with the anime and the early manga. She's unwilling to commit, but it will either be Asuka, Yuri, or the harem ending as I see it right now. Obviously she also played "girl gets the guy from a selection" games, but those arent nearly as common. Her initial thoughts and behavior are those of someone trained by the male role in an otome game.