Rule 34 Dev - 2boys 2humans 2males 3d 3d_(artwork) 3d_model bara bedroom black_hair blonde_hair ckang2021 gay goda_ryuji kiryu_kazuma male/male male_only muscles muscular muscular_male ryuu_ga_gotoku sega size_difference tattoo_on_back tattooed_back tattooed_male yakuza_(series) yaoi|10518818328