2girls anthropomorphization aoki_hagane_no_arpeggio armpits arms_behind_head arpeggio beach bikini blue_eyes blue_hair breasts chair cleavage cloud cruiser day deck_chair duo eyewear_on_head female green_eyes high_resolution legs light-skinned long_hair lounge_chair medium_breasts megane military military_vehicle mole multiple_girls navel no non-web_source nyantype ocean official_art one_eye_closed outdoors ponytail sanzigen scan ship silver_hair sky smile sunglasses sunglasses_on_head swimsuit takao_(aoki_hagane_no_arpeggio) tied_hair tree vehicle very_high_resolution very_long_hair warship water watercraft weapon white_hair wink