bow bowtie chromosome commentary_request drill exhaust_pipe fingerless_gloves full_body gauge gloves greyscale hataraku_saibou hataraku_saibou_black hatsuyoshi_issei jewelry looking_at_viewer male_focus mecha monochrome open_mouth ring ring_box shoes smile solo sperm_cell_(hataraku_saibou_black) tuxedo wedding_ring zentai  bag binary blonde_hair blue_eyes bow braid brand_name_imitation brown_eyes brown_hair chromosome cover diagram dress engrish fake_box_art fake_cover ghostly_field_club handbag handheld_game_console hat hat_bow kurumai maribel_hearn multiple_girls necktie nintendo_ds notebook parabola pencil ranguage short_hair touhou usami_renko  centriole centromere chromatid chromosome homologous_chromosome rule34d rule_63 science sister_chromatid tertrad  chromosome chromosomes razzek tagme