2girls, breasts, clothes_lift, desk, from_below, gal_girl_(gentsuki), gentsuki, large_breasts, light_particles, light_rays, long_sleeves, looking_at_viewer, monochrome, multiple_girls, original, parted_lips, shirt_tucked_in, short_hair, sitting, skirt, skirt_lift, smile, socks, solo_focus, thighs