"Koganeiro" is about a group of high schoolers in their second year who are confronted with the possibly life-altering decision of what to do after high school.

In the days of peace, one clan receives the secret arts from the era of the Warring States, and with them, they perform secret maneuvers.

Kana and Kaoru have been together since childhood. They weren't lovers, but they were supposed to be more special than anyone else. Five years after Kaoru moved to Tokyo and they got separated, Kana follows ...