mu ri003, tenma saki, tenma tsukasa, project sekai, highres, 1boy, 1girl, backpack, bag, blonde hair, blush, brother and sister, cardigan, closed eyes, crossed arms, diagonal-striped clothes, diagonal-striped necktie, dot nose, gradient hair, grey shirt, jacket, kamiyama high school uniform (project sekai), long hair, long sleeves, miyamasuzaka girls' academy school uniform, multicolored hair, neckerchief, necktie, pink eyes, pink hair, red neckerchief, sailor collar, school uniform, serafuku, shirt, short hair, siblings, simple background, striped clothes, thinking, twintails, white background, white sailor collar, yellow cardigan