2girls, arm_support, blue_archive, blue_eyes, blush, breasts, closed_mouth, collarbone, halo, large_breasts, light_blush, light_particles, long_hair, looking_at_viewer, multiple_girls, naked_towel, noa_(blue_archive), onsen, open_mouth, partially_submerged, purple_eyes, purple_hair, shiitake_taishi, sitting, smile, towel, water, white_hair, white_towel, yuuka_(blue_archive)