Ryo Yamada is the author of the manga 'Lonely Rock!' created by Akira Hamaji. and its derivative works, voiced by Saku Mizuno. She is a second-year student at Shimokitazawa High School, serving as the bassist and composer for the band, and also responsible for the harmonies of songs during performances. Her birthday is September 18, her blood type is AB, she is 163cm tall, and weighs 50kg. Ryo Yamada is Nijika Ijichi's close friend. She enjoys being alone and dislikes attending school activities, often making up excuses to avoid responsibility. She is not socially anxious, but simply enjoys being alone. Her expression changed little, she didn't have many friends, and being called a weirdo made her very excited. She holds a strong passion and dedication to music. She once left the band after losing its individuality, but later pursued her musical dream again at Nijika's invitation. Her bass skills were superb, and she went several days away from school for a composition club, putting a lot of pressure on herself. Yamada Ryo came from a well-off family; her parents ran a hospital, but she spent money extravagantly, spending most of her savings on musical instruments, often short on money, and even survived on wild vegetables and weeds. She enjoys reading niche comics and shopping at secondhand clothing stores, with a strong sense of fashion styling. Besides, she's a shut-in who loves reading manga and playing on Switch, and is a bit chuunibyou.