Board Thread:General Discussion/@comment-31395403-20170617120024/@comment-28053472-20170617183120

Yeah, I agree. Yandere-Chan was supposed to be a blank page, who's personality depends on your actions. You can make her whatever kind of person you want. I think decisions like this must be taken by YandereDev himself rather than asking fans because there's a part of the fandom that are 12 year olds and stupid people who ship everything. (At one point they even shipped the turtle with YanChan).

Now, that aside, out of the idea of emotionless and empty, I'd say empty. She can feel Most emotions, fear, anger, but she never felt happy and that kind of created a void in her, that got filled after seeing senpai.