rei_(rei's_room), hanami_ume, year_2024, 1boy, 1girl, ahoge, bare_shoulders, bikini, blue_sky, blush, breasts, brown_hair, cameltoe, collarbone, cowgirl_position, day, girl_on_top, grabbing_another's_breast, gradient_hair, groping, hetero, large_breasts, looking_at_viewer, medium_hair, multicolored_hair, navel, open_mouth, outdoors, red_bikini, red_hair, sky, solo_focus, spread_legs, straddling, strap_slip, sweat, swimsuit, v-shaped_eyebrows, water, yellow_eyes, paid_reward_available, gakuen_idolmaster, idolmaster