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Kahoru, who lives with her family in the countryside, is a mother of two children. My brother Kenichi is excellent and attends a prestigious university in Tokyo. His younger brother, Kenji, was always inferior to his brother by his parents. Kenji, who had been soliciting such thoughts as "I want to be recognized and needed by my mother," witnesses the sex of his parents one day. Kenji saw the appearance of his mother doing yoga, saying, "It's useless without this," and thought, "If you use Ji-Po, your mother will need it."