blueland, chisa (wuthering waves), wuthering waves, absurdres, commentary, highres, 1girl, black choker, black hair, black serafuku, black skirt, choker, closed mouth, desk, hair ribbon, indoors, long hair, long sleeves, looking at viewer, mole, mole under eye, neckerchief, on desk, red eyes, red neckerchief, red ribbon, ribbon, sailor collar, school uniform, serafuku, shirt, sitting, skirt, socks, solo, tacet mark (wuthering waves), white sailor collar