Rule 34 Dev - 1boy 1girls adeptus_astartes anal_sex black_carapace blonde_hair ejaculation ejaculation_while_penetrated erection female frankensteinsmonsterfucker imperium_of_man lacy_bra legs_up muscular muscular_male pegging penis size_difference smile space_marine straight strap-on tattoo testicles warhammer_(franchise) warhammer_40k|7077459664