Board Thread:General Discussion/@comment-27337549-20151217152851/@comment-24829180-20151225235603

I detailed my theory on the blog, but basically I think she's the headmaster's daughter and her message is meant for Info-chan. This would make sense because the headmaster is actively protecting Info-chan: he's granted her the status of a "club" exempt from school rules, so she can do whatever she wants. (By contrast, Yandere-chan gets expelled from school or arrested if she's caught - and, if she's careful, no one should know what she's up to, whereas everyone knows that Info-chan is involved in blackmail and selling panty shots etc.)  The headmaster might be keeping his daughter out of school for her safety and/or so that she can't interfere with Info-chan. Perhaps Yandere-chan finds the computer in Info-chan's club room and "Computer girl" thinks that Yandere-chan must be Info-chan?

If she is the headmaster's daughter, and is the final rival, maybe Info-chan will somehow be removed from the school after the defeat of the ninth rival. That would certainly make the final one much harder to defeat since you wouldn't be able to get favours from her and so on