A lewd and depraved master performed penis enlargement surgery on a prostitute to enhance her pleasure, transforming her into a 25cm giant penis. The subsequent test resulted in my wife experiencing a melting orgasm. (Yui Hatano, NGOD-183)

Yui, the wife, takes care of her husband's construction worker, but she dislikes his lewd personality. One evening, her husband and the construction worker are having drinks at home. As usual, the construction worker makes lewd remarks, seemingly reminiscing. "Oh, by the way, to make the prostitutes feel good too, I had penis enlargement surgery. Look." Then, laughing, he pulls down his pants, revealing a modified 25-centimeter penis...