aspiring financial planner college student asami asks her father's old friend sugiura, who is knowledgeable about asset management, to be her tutor. sugiura, who has failed in business and has a large debt, harbors lewd interest in asami, who has grown into an adult body. unbeknownst to asami and her family, sugiura envies his former happy family friends and plans to take revenge by defiling asami.
