NGOD-307 My well-developed cousin Rika has returned home for the first time in a while and finds her

A single, introverted young man lives with his mother at his parents' home. One day, his relative Rika, who has returned from the city, comes to visit him. After years of reunion, Rika finds out she's working in the apparel industry in the city, and has become a sophisticated, sophisticated, gal-like beauty. The shy, reclusive young man is captivated by the charms of his outgoing gal relative, who speaks to him with a bright, cheerful smile...