The series centers on Hajime Tsukiyoda, a high school film student who finds himself in the middle of a terrifying event where giant goldfish suddenly descend on the populace of Shibuya and begin feeding on people.

However, she is revealed to be deranged and unsympathetic to his plight and, in an effort to have him "sacrifice" himself, ends up getting killed by the goldfish.

The series is written and illustrated by Hiroumi Aoi, and began serialization in Gangan Joker on September 21, 2016.

[5] At Anime NYC 2017, Yen Press announced they licensed the series for English publication.

[29] At San Diego Comic-Con, Deb Aoki picked the series as the worst manga for anyone of any age.