yoru nai, arona (blue archive), plana (blue archive), blue archive, highres, 2girls, black choker, black coat, black eyes, black hairband, black sailor collar, black serafuku, blue hair, blue shirt, blush, braid, choker, closed eyes, closed mouth, coat, colored inner hair, hair over one eye, hairband, halo, holding, holding wrench, long hair, long sleeves, multicolored hair, multiple girls, neckerchief, open clothes, open coat, open mouth, pink hair, sailor collar, school uniform, serafuku, shirt, short hair, single braid, smile, upper body, white choker, white hair, white hairband, white neckerchief, white sailor collar, wrench