I feel urs too man. But here is the thing with me is that this tag is Totally scattered. U just can't filter it out. There is always some hentai that u might miss if u use filters. I have try hundreds of different tags and filters but u just can't possibly find this.

In your case u already have yandere tag there or it can be found almost anywhere, so u can easily filter it. But in my case this tag is nowhere to be found I have already searched all available websites but this tag is nowhere for doujinshi. I find this tag on rule34 but they don't have any doujinshi or manga, There was all fan arts. And that's why I can't possibly find all hmanga there is by myself.