For the life of me I can seem to find an artist on Pixiv or anywhere else, and they may be deleted. On of there series in particular has two girls with lots of body doodling hanging themselves due to being hypnotised to do so. They hang one after another, so one of the girls has the opportunity to tell the other to "go die (heart)" as the other hangs. Also, I remember after they're dead there's a voice recording of them afterwards. I believe there should be an English version of it.

I'll be happy with a gallery anywhere, and artist name is also good. Pic only related in the sense that it's a coerced death.