1girl, black_choker, black_wings, blush, book, choker, closed_mouth, flat_chest, halo, head_wings, holding, holding_book, long_hair, pink_eyes, pink_hair, pink_halo, shirt, shorts, sleeves_past_elbows, solo, twintails, white_shirt, white_shorts, wings, koharu_(blue_archive), blue_archive, year_2023, 