A teenager named Noriko Shimabara runs away from her family in Toyokawa, to meet Kumiko, the leader of an Internet BBS, Haikyo.com. She becomes involved with Kumiko's family circle, which grows darker after the mass suicide of 54 high school girls.

A brother and sister learn their biological grandfather was a kamikaze pilot who died during World War II. During their research into his life, they get conflicting accounts from his former comrades about his character and how he joined his squadron.

film directed by Takuji Suzuki