best quality, masterpiece, highres, solo, {nagatoro_hayase_donttoywithmemissnagatoro:1.15}, black_hair, long_hair, dark-skinned_female, dark_skin, brown_eyes, hairclip, hair_ornament, blush, bangs, smile, 1girl, chalkboard, portrait, school_uniform, shirt, white_shirt, earclip, sweater, classroom, closed_mouth, collared_shirt, frown, indoors, looking_at_viewer, wide-eyed