1girl absurdres akizuki_(kancolle) black_eyes black_hair black_sailor_collar breasts closed_mouth clothes_writing electric_guitar gibson_sg grey_background guitar hachimaki headband highres holding holding_instrument instrument kantai_collection kneehighs long_hair looking_at_viewer medium_breasts miniskirt nagisa_nagi neckerchief pleated_skirt plectrum ponytail sailor_collar short_sleeves simple_background skirt socks solo white_skirt white_socks yellow_neckerchief