An Event in a Story where death one or both parents are a mayor plot point, the classic and cliche use of this plot point is the Protagonist's Parents die, this forces him/her to live somewhere unfamiliar which starts the games plot

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DENIED: Too broad and very, very common. Actually, can it be called a major plot event if they die off-screen and they're not even main characters- which is the most common way this occurs? Are one or more parents dying as a legitimately major plot event (which in itself has a slightly subjective element) really all that common? Also, it's best not to start a trend of "Death of [X]" traits or a trend of adding common VN occurrences as tags (which would actually make the tag useless, given that many, many games would qualify anyway).