Twenty-eight-year-old Sayu Igarashi, who works at a guesthouse in Kobuchizawa, Yamanashi Prefecture, has applied to participate. Previously employed at a hotel in Tokyo, she wanted to utilize the sensitivity and skills she developed during that time, which led her to seek this appearance. After her father's passing, she returned to her hometown and now lives locally. She recalls her former superior from her hotel days as an exceptionally skilled technician, an experience that left a lasting impression. While considering various performer recruitment opportunities, she came across an offer from RUBY.