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``Ken-kun, would you mind showing me your grandson's face now?'' I couldn't hide my agitation at my father-in-law's words. It was supposed to be a fun hot spring trip with the whole family, but he ended up being asked to take advantage of it and have a baby with his wife... As instructed by his father-in-law, after a month of abstinence, the day of his hot spring trip arrived, but as expected, his wife refused to have a child. While wandering around the inn to relieve his frustration, he happens to witness his mother-in-law taking a bath.