Rule 34 Dev - 1girl 3boys age_difference black_hair border brother_and_sister brothers child closed_eyes crossed_ankles ensemble_stars! facing_viewer frown full_body furrowed_brow green_border hands_on_own_thighs head_on_another's_shoulder isara_mao jacket leaning_forward leaning_on_person legs_apart loafers long_sleeves looking_at_viewer male_focus multiple_boys on_bench pink_hair sailor_collar sakuma_rei_(ensemble_stars!) sakuma_ritsu school_uniform shoes short_eyebrows shoulder-to-shoulder siblings signature sitting sknyr straight-on sweater v white_background yumenosaki_school_uniform|23056300215