The remains of the five others members were found skeletonized at the burning wreck of the office. Sonoi and Takayama subsequently took the train and reached the Nakai residence in Kobe. Sonoi's face and clothing were soiled, and she wore a jika-tabi on one foot and a man's shoe on the other, so that she looked "like a beggar" and was nearly beyond recognition. On August 15, when informed the war had ended, Sonoi expressed her gladness at being able to act to her hearts content to Akiko Utsumi who was visiting, and also wrote a letter dated August 17 to her mother Kame in Morioka expressing this sentiment. However, Sonoi's condition deteriorated. Her hair started to fall off at night, before suffering high fever around August 19, according to Mrs. Nakai; Other symptoms such as hematochezia, internal bleeding and delusions also presented. By August 19, who was a stage director for Sakura-tai tracked Sonoi down, and came to see her at the Nakai residence. Sonoi asked of news about Maruyama, and sensed he must have passed away. On August 21, Sonoi's fever reached 40 degrees C, and Mrs. Utsumi rushed out to procure ice. Sonoi felt the coolness of the chilled gauze, and said "Oh, how good it feels". Those were the last words before she died. Sonoi's remains were cremated the following day, and her bones and ashes buried in Onryū-ji in Morioka. The story of the Sakura-tai's demise was written up in a book by author in 1980, which was adapted into the film "Sakura-tai chiru" (1988) directed by Kaneto Shindō. The childhood home of manga artist Osamu Tezuka in Takarazuka, Hyogo belonged to a row of houses dubbed "Musical Theater Tenements" ("Kageki nagaya"), and Tezuka recalls that Keiko Sonoi lived at the end of this block. The manga "Ribbon no kishi" ("Princess Knight") was "totally nostalgia of the Takarzuka Revue", in the artist's words. He was also a devoted fan of the Takarazuka production of "Pinocchio" (which starred Sonoi), and his "Astro Boy" may have been influenced by it. In 1989 her birthplace Matsuo, Iwate commemorated the centennial of the founding of the village by holding an exhibit of Sonoi's belongings and related printed materials, and publishing a scrapbook compilation "Shiryōshū".