Rule 34 Dev - 2boys age_difference batman_(series) bite bite_mark biting_neck blue_eyes blush blush_lines chain247 damian_wayne dc dc_comics dick_grayson hand_under_clothes hero_costume hugging hugging_from_behind male male/male male_only nightwing pijama robin_(damian_wayne) robin_(dc) speech_bubble trembling yaoi|10326286648