While her husband was away on a business trip, her perverted father-in-law was aroused by her sweaty armpits, and then by her licking his armpits. He immediately began to manipulate his penis, scolding him with armpit scissors and making him ejaculate. - Reika Takeda LULU-391

He had lived with his son and wife for several years; it was just the three of them at home—his busy son and his wife with breasts so large it was hard to know where to look. He couldn't suppress his desire for his wife's large breasts, so he had always suppressed his lust. One day, his son went on a business trip, leaving him alone with his wife for a few days. While cleaning, he saw his wife's armpits exposed under her sleeveless top, and he was thrilled, unable to resist burying his face in them. His wife looked bewildered, but the smell of her sweaty armpits aroused him, and he licked her entire armpit. In a moment of triumph, he immediately started having sex with her, but she scolded him with armpit scissors, telling him to ejaculate… From that day on, he could never forget the pleasure of ejaculating under her armpit, becoming completely addicted to her armpit vagina.