japanese emakimono painting style, traditional ink and color on silk, horizontal scroll composition, Sengoku period cavalry charge, all mounted Takeda cavalry with fluttering banners bearing the kanji "風林火山", dust clouds swirling under galloping horses, modern Japanese schoolgirl in sailor uniform partially armored with traditional samurai gear, riding among them on horseback, clutching a yari spear, hair and ribbons flowing in the wind, old parchment texture, stylized dynamic brushstrokes, ink outlines and delicate muted color palette, background of stormy sky and distant ridges, intense forward motion and rhythmic composition, powerful contrast between her modern school uniform and the historical setting, solemn and heroic war scroll atmosphere, no modern elements aside from the girl's presence
武田の騎馬隊に転生した女学生