tsukishima shijima's sister (shimeji simulation) drawn by tsukumizu

1girl belt belt_buckle black_coat black_hair black_pants breast_pocket buckle buttons chair coat collar computer curtains desk full_body greyscale hair_ornament hair_tie hairclip highres indoors lamp looking_at_viewer monitor monochrome no_eyewear open_clothes open_coat pants pocket ponytail shimeji_simulation shirt shoes short_hair sneakers solo third-party_source tsukishima_shijima's_sister tsukumizu watch white_shirt wristwatch