itomi sayaka, shichinosato kofuki, toji no miko, toji no miko: kizamishi issen no tomoshibi, game cg, official art, third-party source, 2girls, ahoge, arrow (symbol), black shoes, blurry, blurry foreground, board eraser, breasts, brown hair, brown hood, buttons, chalk, chalkboard, classroom, desk, dot nose, equation, hair between eyes, holding, holding chalk, looking at viewer, math, multiple girls, open mouth, purple eyes, shirt, shoes, short hair, short sleeves, small breasts, solo focus, teacher, white shirt