Rule 34 Dev - 10s 2girls age_progression aged_down child comic greyscale grin halo headgear kantai_collection mechanical_halo monochrome multiple_girls nathaniel_pennel necktie no_eyepatch open_mouth pennel personification school_uniform serafuku short_hair silent_comic smile tatsuta_(kancolle) tenryuu_(kancolle) tomboy toy_sword|4713858162