Rule 34 Dev - 2020 2boys 4:3 dark_hair dick digital_drawing_(artwork) digital_media_(artwork) g-man gay gay_sex glasses gordon_freeman half-life half-life_2 hev_suit hi_res high_resolution highres human humanoid male male/male male_focus male_only oral oral_sex penis penis_out sitting suit tagme valve xenophalic yaoi|7222478920