1girl baka_to_test_to_shoukanjuu blood blush book border chalkboard chibi classroom_eraser couple fang green_hair kudou_aiko labcoat maako_(pixiv54348) nosebleed ovum sex_ed sex_education sperm_cell tsuchiya_kouta wink

3boys 3girls :3 :d ^_^ artist_name artist_self-insert blush bouquet bow chalkboard child closed_eyes comic commentary dated drawing finger_to_mouth flower glasses highres kawacy kiss laughing multiple_boys multiple_girls notebook open_mouth original ovum

2girls :d alternate_costume alternate_hair_length alternate_hairstyle anatomy arm_cannon artist_name black_bird black_cat black_headwear black_hole black_sclera black_shorts blouse blue_bow blue_footwear blue_hairband blue_ribbon bow cat chinese_commentary colored_sclera commentary compass_(instrument) dna english_text fertilization fish flower

1girl apron bangs blush bob_cut breasts choker cleavage_cutout clothing_cutout earrings eyebrows_visible_through_hair fio_(maturiuta_sorato) hair_ribbon highres jewelry long_sideburns maid maid_headdress maturiuta_sorato miniskirt open_mouth original ovum own_hands_clasped own_hands_together partially_translated ribbon sideburns skirt sperm_cell

bunny_ears close-up closed_eyes egg eyes_closed flower long_hair long_sleeves lowres multiple_persona necktie no_nose origami_(zoukibayashi) ovum pun purple_hair rabbit_ears reisen_udongein_inaba simple_background skirt touhou udumbara upside-down

1girl amelia_(maturiuta_sorato) april_fools bare_shoulders commentary_request detached_collar eyebrows_visible_through_hair flower greyscale hair_flower hair_ornament hat highres leggings long_sleeves looking_at_viewer maturiuta_sorato mole monochrome open_mouth original ovum partially_translated priestess ribbon robe short_hair sidelocks sperm_cell staff