Massacre Happy Ending - Chapter of Blue - summary: Ao Minato, a young man who killed his father-in-law who repeatedly abused his family and entered a juvenile reformatory. However, the sister who should have protected committed suicide at the end of suffering, and her sister Akane is also missing. Ao, who arrived at a certain shrine, wished for the safety of his sister, which is the only hope left, and swears to God that he will do anything for that ... The blockbuster panic suspense "Massacre Happy Ending". The new chapter is finally opening---.JA家族に虐待を繰り返す義父を殺害し、少年院に入所することになった青年、湊蒼（みなと あお）。しかし、守ったはずの妹は苦しみの果てに自殺し、姉の朱音も行方不明であることを知る。 とある神社にたどりついた蒼は、残された唯一の希望である姉の無事を願い、そのためなら「なんでもする」と神に誓うが…。 大ヒットパニックサスペンス「虐殺ハッピーエンド」。その新章がついに開幕―――。