strike witches, gertrud barkhorn, charlotte e. yeager, takasugi rinko, 2girls, alternative hairstyle, bare shoulders, black hair, blue eyes, blush, breasts, brown eyes, brown hair, eye contact, female, girl on top, hair down, hand on another's cheek, hand on another's face, large breasts, light-skinned, long hair, multiple girls, nipples, nude, onsen, open mouth, orange hair, shy, side, smile, steam, sweat, water, wet, yuri