* This series deals a lot with death, especially considering that the whole plot starts off with essentially ''Film/TheHappening'', well...happening, but it was definitely driven home in two specific places with two specific KickTheDog moments. This Troper was ''bawling'' after reading these chapters of the manga.
** Seeing [[AnIcePerson Nami's]] backstory and exactly ''why'' she hates all power users: [[spoiler: Her younger brother, who had [[IllGirl a heart defect]] but tried to be tough and protect his older sister anyways, gets killed horribly when he's trapped in a car that [[AxCrazy Kanon]] exploded and ''burns to death while crying out to her to save him.'']]
** When [[RivalTurnedEvil Hirose]] [[spoiler: casually kills [[FriendToAllLivingThings Haruka]] because she snapped Taisuke out of his SuperPoweredEvilSide.]]
* A case of AuthorExistenceFailure is usually enough of a tearjerker, but what makes it worse is that the creator of the manga wrote the last few chapters in his hospital room during his last days. Reportedly he had already been planning another series before his death.