Hell Is Dark with No Flowers, Vol. 5 (Light Novel)

"I KNOW YOU KILLED THE RED GOLDFISH."Despite winning the competition over Hell, Shiroshi refuses the throne and returns to his old life with Seiji. And soon enough, he has a new mystery on his hands--a family is struck by a series of suspicious deaths, and the husband of one of the victims suspects foul play. But even stranger, he claims the murders are meant to echo the events of "Goldfish," a children's song by Hakushu Kitahara. And in that case, another tragedy is imminent...