Chichinoya's long-awaited new work and new series 'Oni Chikushi'! 'Shinichi', a disgusting otaku, is repeatedly raping and training the beautiful mother and daughter of the 'Nikaido family'! The first target is the sister 'Nao' with a cheeky personality. Using the obscene drug he developed, he rapes Nao, who is in a dazed state, and blackmails her based on her shameful appearance, repeating the training. Although she initially resisted, she gradually became immersed in pleasure and eventually sought the penis herself, thrusting her hips! Please look forward to Chichinoya's banquet of carnal desire!