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Sweltering midsummer days. His brother-in-law, Tsurugi, is shunned by his family because his job hunting is not going well. One day when I was accumulating pent up, I witnessed the friendship between my younger brother and his wife. Lust for the young wife, Serina, who is a sister-in-law, gradually increases, and finally commits Serina. Serina's lustrous skin glows obscenely with sweat and bodily fluids. Serina's reaction to Tsurugi's decision to leave home is...