Protagonist Kujou Masato is a university student of living alone. Though it was born as twin younger brother in a person of prestigious family Kujou of the certain village, villager "Man's twin is not a good luck" with advice, by such a relative who believes in superstition, the village is driven out with mother and spending hard life.

Though Masato that proceeds to university somehow, mother dies in those days, the grave was not able to be built and it had regrettable time. Then after a while from the elder brother who became a man of power in the village "there is a request in exchange for money building a grave of mother" reporting is accepted. Though the real intention is Masato that is not substituted and returns to the village, the elder brother doesn't exist, yoshino Maid introducing oneself meeting is accepted. When hearing it, the elder brother is refraining from the marriage proposal with the fiance of the financial clique, because there is a big business talk in foreign countries, it is said that it wants you to become a dummy and to advance the marriage proposal.

Though it lived a wealthier life in comparison who lived a poor life, elder brother who tries to obtain further wealth... It gets angry in elder brother's difference of circumstances and greed and arrogance, though Masato that tries to refuse, it was Yoshino that stopped him. She has the grudge with the Kujou house and village, revenge has been proposed to Masato with the same enemy. The revenge that Yoshino proposes, it pretend to be an elder brother and rape daughters of the village self-indulgently, the marriage proposal with the fiance is canceled, in addition the one of covering with all crimes and making elder brother's life in the future absurd. Masato that hears the story, felt feelings that had been suppressed up to now begin to overflow.

Thus to accomplish revenge to the Kujou house who has been oppressed for years, the infringement play of Masato raises the act.