Ushio Kofune is a central character in the anime series 'Summertime Render.' Known for her cheerful and optimistic personality, she is the childhood friend of the protagonist, Shinpei Ajiro. Ushio's untimely death brings Shinpei back to their hometown for her funeral. However, her mysterious demise sets off a chain of supernatural events that involve time loops and eerie occurrences. Ushio plays a crucial role in unraveling the mystery, as her spirit continues to guide and support Shinpei in his quest to protect their friends and uncover the truth behind the strange happenings in their island town.