A lone wolf with a sympathetic ear, Yamamoto hears the complaints and insights from her friend Wada after school in the food court. She is typically seen on her phone practicing her English and she wants to visit America someday. Although not as open with her passions, she is a fan of urban myths especially a large American YTer that she greatly admires. She works at a store in the mall part-time to build up her funds so that she can visit America. She is quite self-conscious about her body despite having an impressive bust size (E-Cup) not wanting to go to the beach in more revealing swimsuits like string bikinis. She is also part of the string ensemble club during the summer.