1boy, animal_ears, arknights, ass, ball, bird, blue_male_swimwear, blue_sky, brown_eyes, brown_hair, clenched_butt, cow_boy, cow_ears, cow_horns, eagle, feet_out_of_frame, from_behind, from_below, holding, holding_surfboard, horns, looking_at_viewer, looking_back, male_focus, male_swimwear, matterhorn_(arknights), matterhorn_(beach_guard)_(arknights), official_alternate_costume, shanguier, sky, solo, surfboard, thighs, toned, toned_male, topless_male, volleyball, volleyball_(object)