Skill Copy and the Hero's Journey

Two ordinary students, Tadahiko and Nanako, are transported to a fantasy world by a goddess who claims Tadahiko is destined to be a hero. Nanako is given the ability "Skill Copy," which allows her to duplicate any skill she encounters—including erotic ones. As they travel and meet various inhabitants to gain strength for their quest against the Demon King, Nanako gradually discovers her boyfriend's hidden NTR fetish and finds herself drawn into increasingly intimate situations. The game follows their adventure as they balance their mission with the unexpected consequences of copying skills they never anticipated.