character: takasaki_yu, character: uehara_ayumu, character: hinoshita_kaho, character: otomune_kozue, A medium shot, underwater view in a school diving pool, showing four girls swimming submerged in a horizontal line. Takasaki Yu, with green gradient hair and green eyes; Uehara Ayumu, with pinkish-orange hair tied in a ponytail; Hinoshita Kaho, with orange hair in low twintails; and Otomune Kozue, with long purple hair in a side ponytail, are all wearing matching navy blue piping school swimsuits. They are all smiling joyfully, holding hands in a chain as they glide through the clear blue water. The background consists of the deep blue depths of the diving pool, with refracted sunlight creating shimmering caustic patterns on their skin and the pool floor. Tiny air bubbles surround them, enhancing the aquatic atmosphere. The visual style is a high-quality anime illustration with a bright, refreshing color palette and a sense of weightless serenity.
