A third-year student at ● High School, I just wanted to live a quiet school life, enjoying my time alone. But every day, my underclassman "Erina" keeps approaching me. She refuses to let me stay isolated, shaking up my peaceful routine. Though the noisy days are tiring, spending time with her somehow feels comforting. With a bold attitude and a cheeky tone, she insists, "Two people are definitely more fun than one!" Her quirky, impossible-to-hate personality is making my high school life more enjoyable than ever.