2boys, baby, bird_tail, bird_wings, black_feathers, blue_background, blue_eyes, blue_tail, blue_wings, closed_mouth, cracked_egg, feathered_wings, feathers, full_body, grey_hair, harpy_boy, head_tilt, head_wings, isaki_(shimesaba), long_hair, looking_at_viewer, male_focus, monster_boy, multiple_boys, neck_fur, original, simple_background, standing, tail, talons, walking, white_feathers, winged_arms, wings