Board Thread:General Discussion/@comment-27337549-20151217152851/@comment-24829180-20160106222947

The girl being Yandere-chan's half-sister would be interesting, but I very much doubt Ryoba ever let her husband out of her sight long enough for him to cheat on her!!

A while ago YandereDev mentioned a secret, male character who is highly important to the game (as much, or more, than Info-chan) but can't be revealed yet. If Computer Girl is not the Headmaster's daughter, maybe she is the secret character's daughter?

I agree that the red outline should indicate a rival; characters who have witnessed you commit murder usually have an orange outline. We have already been told who the rivals are:

Osana Najimi

Oka Ruto

Drama Club President (described by YandereDev as having a fancy purple hairstyle; Kokona may be turned into this character)

Swimming Club President (described by YandereDev as a "genki girl")

Cooking Club President (described by YandereDev as a kind, gentle "big sister" type)

Delinquent Rival (her look was briefly spoiled in a video; she's blonde with a bandaged arm. Even if that design changes, well, Computer Girl obviously isn't a delinquent)

Nurse

Substitute Teacher

Senpai's Sister

Student Council President

So the Student Council President is really the only rival that Computer Girl could be.