@VINT64
In a much more serious/edgy setting, "If he was awake I'd kill myself right now..." would be considered a red flag that she might not be all that emotionally balanced or sane.
This is, of course, nowhere near that extreme level of "being unable to live without MC", but thanks for your feedback.
Ah, it was "red flags". Sorry. I'm not used to this "flags" slang at all. Haven't played any visual novels, and don't plan to.
Won't ping you on this. Just in case you come here again.
The term "red flag" doesn't come from visual novels. It's a common expression in the U.S. to signal danger or in the case of relationships indicates the person would not make a good partner .
Maybe because they use red flags on beaches to warn people the water is dangerous. Or maybe the term is older than that. but it's been around well before VNs.