Her mother remarried and her new stepfather, a kind and friendly man, quickly became attached to her stepdaughter Nico. One day, her stepfather saw her changing clothes and got excited. And then... Unable to bear her stepfather's sexual acts, she consulted her mother, but she showed her toxic parent side by pushing her away, saying, "You were the one who seduced him!" With no one to rely on, Nico began to seek her stepfather herself... [Boobs! Butts! Oshikatsu Festival! ~There will also be an online autograph session~] Show your "love for your favorite idol" to "Kawagoe Nico" with a cake! Everyone who enters and purchases a target product during the campaign period will receive a signed special portrait! In addition, 100 people will be selected by lottery to participate in the online autograph session! For details, please check the online autograph session overview on the special page.