A beautiful girl with shoulder-length red hair and yellow eyes. She boasts one of the largest busts in the series, along with even more impressive thighs. Her thigh size is notable enough to be mentioned even in the official 4-panel comics. A second-year high school student at Shinsen Academy, the same school as the protagonist and Moriya. She often calls the protagonist "clueless" for his lack of delicacy. She is the protagonist's childhood friend and lives next door; since she struggles to wake up in the morning, he often comes over to wake her up. Having known the protagonist since they were small, she has no guard around him. She exposes her defenseless, just-woken-up state every time he wakes her, but she claims it's fine since she isn't in an embarrassing outfit. She has a unique sense of values where entering a girl's room is a no-go, but she doesn't mind if he catches a glimpse of her cleavage. She has always been bad at tidying up, so her room is constantly messy. Unopened packages from online shopping are piled up, and clean laundry is often scattered around. However, she doesn't care in the slightest. She is concerned that despite the protagonist's high skill level on the bass, he remains a support member and has yet to join a formal band. In the past, she played guitar after the protagonist and Moriya started music, but she quit long ago, believing she had no talent, and hasn't touched a guitar since. When the protagonist decided to form his own band and invited her to play guitar, she flatly refused, saying, "I'm not doing it!" Naturally savvy with internet trends, she helped grow the video account of Moriya Fuji (drums)—whose videos were struggling—by posting makeup tutorials and other content. At the protagonist's earnest request, she taught guitar to Enagi Himami, who wanted to form a light music club, so Enagi could perform at the club orientation. She obtained footage of the performance used for recruitment and spread it on social media. It went viral, contributing significantly to the breakthrough of "Lemonade Factory." Although she participated in the recruitment performance, she had decided never to play guitar again, so she did not become a band member and gave her own guitar to Enagi Himami. Ririko Futamihara provides behind-the-scenes support, chores, and announcements for the band Lemonade Factory. The members of Lemonade Factory are: Enagi Himami: Guitar & Vocals Anju Kakure: Lead Guitar Tsukimo Shimakoshi: Keyboard Moriya Fuji: Support Drums The protagonist is the Bassist.