Rule 34 Dev - 1boy 1girl back-to-back bad_id bad_pixiv_id cyborg dual_persona eyepatch gender_request genderswap huge_weapon mastema metal_gear_(series) metal_gear_rising:_revengeance metal_gear_solid metal_gear_solid_4:_guns_of_the_patriots navel raiden_(metal_gear) sneaking_suit sword weapon white_hair|2670432102