Every story has an ending and they are often marked by happy or dark and controversial endings.
Here are 7 manga series with brutal endings:
7 – Jinrō Game
“Jinrō Jogo” also known as “Werewolf Game”, is a manga series with a score of 6.55/10 on MyAnimeList, written by Risadinha Akiguchi and illustrated by Koudon.
The plot revolves around a group of teenagers who are kidnapped and imprisoned in a mansion, where they are forced to participate in a life-threatening game of deduction.
Nishina and her lover, Inoue are the last two survivors.
6 – Sun-Ken Rock
“Sun-Ken Rock” tells the story of Ken, a rogue high school student who moves to Korea to pursue his crush, Yumin.
The story culminates in a fight against the White Dragon yakuza gang, led by Yumin’s father.
5 – Girls Go Around
Initially presented as a normal school manga, Girls Go Around quickly reveals its dark nature.
The situation gets worse when Kyōsuke realizes that the only clear solution to breaking the vicious cycle is a sad ending for himself.
4 – Meteor
Meteor is a post-apocalyptic survival story after a meteor strike.
3 – School Mermaid
The story begins with a peculiar premise: girls who use a magical notebook at night at school can summon mermaids.
Their purpose is to hunt mermaids to make their love come true.
2 – Shadow Star
“Dark Star” begins as a typical magical girl story, but quickly reveals a much darker nature.
The plot develops tragically with the deaths of the characters.
1. Platinum End
After the success of “Death Note”, the duo Tsugumi Ohba and Takeshi Obata introduced “Platinum End”.
The manga’s ending is especially dark: Humanity should control its own destiny.
Aurora 
Naomi 
Caroline