Yuuna and the Haunted Hot Springs, Volume 11 (Yuuna and the Haunted Hot Springs #89-97)

When Yuuna's talisman wears off, leaving her suddenly invisible in the middle of a performance at a music festival, the residents of Yuragi-sou have to think on their feet! Nothing they try seems to make Yuuna visible again. Meanwhile, what's this about Yuuna and Kogarashi winning a night in a high-end hotel? At least she's still visible to him...