3girls 4boys ? a106 a107 animal animal_ears atom_(tetsuwan_atom) balloon birthday black_hair blush brown_hair cake chaimaou f14 food fruit gift hat letter multiple_boys multiple_girls ochanomizu_hiroshi ochanomizu_ran robot spiky_hair strawberry tail tenma_umatarou

1boy 1other :d a106 android atom:_the_beginning atom_(tetsuwan_atom) cat character_name f14 greyscale highres iyo_(kurumiwarin) monochrome pun robot smile tetsuwan_atom

1girl a106 announcement_celebration atom:_the_beginning beret black_hair blush book_stack cat coffee_cup f14 flipped_hair glasses hat korobu_(madob) neckerchief ochanomizu_ran origami robot school_uniform screwdriver serafuku short_hair simple_background sweatdrop tetsuwan_atom white_background

1girl alkemanubis atom:_the_beginning backpack bag beret black-framed_eyewear brown_hair cat f14 glasses hat highres ochanomizu_ran puffy_short_sleeves puffy_sleeves running school_uniform serafuku short_hair short_sleeves simple_background

2boys a104 a106 alternate_costume atom:_the_beginning big_nose black_hair blue_necktie blue_pants brown_hair carrying cat f14 full_body kasahara_tetsurou lamppost male_focus multiple_boys necktie newspaper ochanomizu_hiroshi official_art outsude_border pants pointy_hair reading red_necktie red_pants robot shoes

2girls a107 announcement_celebration atom:_the_beginning black_hair blonde_hair brown_hair camisole cat dated drumsticks electric_guitar f14 glasses guitar hat imai_toonz instrument keychain keytar looking_at_another multiple_girls music north_(atom:_the_beginning) ochanomizu_ran one_eye_closed playing_instrument plectrum robot sailor_hat

2boys a106 animal animal_on_head atom:_the_beginning big_nose black_hair brown_hair cat crossed_arms dated f14 full_body hand_in_pocket kumaori_jun labcoat multiple_boys ochanomizu_hiroshi on_head pointy_hair robot short_hair tenma_umatarou tetsuwan_atom

1girl announcement_celebration atom:_the_beginning beret black_hair blue_legwear blue_skirt cat commentary copyright_name f14 glasses hat holding_cat looking_at_viewer lying neckerchief ochanomizu_ran on_back open_mouth pillow puffy_short_sleeves puffy_sleeves rainbow school_uniform serafuku short_hair short_sleeves signature skirt

2boys 2girls a106 a107 apron atom:_the_beginning blue_skirt brown-framed_eyewear brown_eyes candy cat chocolate chocolate_heart choker closed_eyes cup drinking f14 food glasses happy_valentine hat heart indoors iyo_(kurumiwarin) labcoat laughing mixing_bowl mug multiple_boys

1girl 2boys a106 a107 apron atom:_the_beginning big_nose black_eyes black_hair blanket brown_hair cat chair christmas_tree closed_eyes coffee couch cup f14 formal gift glasses hat highres indoors iyo_(kurumiwarin) merry_christmas mug multiple_boys ochanomizu_hiroshi

6+boys 6+girls a106 a107 atom:_the_beginning ban_kensaku ban_shunsaku beard big_nose black_hair black_pantyhose bow braid brown_eyes brown_hair copyright_name f14 facial_hair glasses green_hair grey_hair hair_bow highres hug hug_from_behind iyo_(kurumiwarin) lab_coat long_hair mars_(atom:_the_beginning) multiple_boys