Nanao Riona takes on the challenge of swallowing a huge amount of cum for the first time! In "A Surprise Greeting," she enters a cum-swallowing photoshoot by herself and seduces the male members, enjoying the sperm that is spat out from the members. In "A Science-Based JK with Glasses Swallows Semen for Research," she uses a gentle handjob to collect semen on a board and carefully observes its thickness and texture. Unable to hold back, she slurps it up and savors it to the fullest. In "Cat-Eared Girl's Swallowing Night Party," she drinks alcohol and randomly squeezes the milky liquid out of the erect cocks around her, drinking it down while enjoying the dense texture with her mouth and tongue.