tohno akiha, tohno shiki, toono akiha, vermillion akiha, tsukihime, step-brother and step-sister, duplicate, translation request, 00s, 1boy, 1girl, anger vein, black hair, bleeding, blood, blue eyes, brother and sister, brother and step-sister, chibi, chibi inset, fallen down, gakuran, hairband, head tilt, headband, long hair, long skirt, lying, neck ribbon, o o, red hair, ribbon, school uniform, shirt, short hair, siblings, skirt, smile, step-siblings, sweat, very long hair