Oboreru Knife tells the story of Natsume, a sixth-grade girl who has to move from Tokyo to a decidedly different town in the countryside. Upon meeting a boy named Kouichirou there, "something" stirs inside her. The story depicts a "teen heart on the brink of ruin." (Source: ANN)

Oboreru Knife was published digitally in English as Drowning Love by Kodansha Comics USA from May 16, 2017, to February 25, 2020. The manga was adapted into a live-action film which premiered in Japan on November 5, 2016.