19-year-old Yui heads to an amateur's house with a smile, and this is her first AV appearance. First, when she meets the young man, she looks nervous, as it's her first time having sex with someone other than her boyfriend, despite her cheerful personality. After cunnilingus and a blowjob, when he penetrates her, she writhes in pleasure, saying "it feels good!" It's irresistible! Also noteworthy is the way the man uses his hips so skillfully that it's hard to believe he's an amateur. When asked how she felt as they walked, she smiles and says, "It felt so good it was crazy," for the first time in a year.