haiteku, hiiragi kagami, hiiragi tsukasa, lucky star, bad id, bad pixiv id, 00s, ^^^, blouse, blue eyes, blush, bow, closed eyes, comic, english text, headband, long hair, looking at viewer, open mouth, purple hair, ribbon, school uniform, serafuku, shirt, short hair, short twintails, siblings, simple background, sisters, smile, speech bubble, sweat, teaching, tears, thought bubble, thumbs up, twintails, white background, white shirt