A tale of revenge, honor and disgrace, centering on a poverty-stricken samurai who discovers the fate of his ronin son-in-law, setting in motion a tense showdown of vengeance against the house of a feudal lord.

New student Kanji transfers to 6th grade 2 class, where Ayami Mutoi works as the homeroom teacher. Students begin to talk among themselves that they have seen new transfer student Kanji in a dream. Yuiko Koto also had a night mare. In her nightmare, a boy that looks transfer student Kanji appeared as a prince. Ayami Mutoi tries to keep that to herself. She actually likes the prince in her dream.