I saw this item on Oops Music, but I haven’t seen it anywhere else. Rittor Music is publishing a score book of the upcoming Shiina Ringo rarities collection, Watashi to Hoden, on July 30. The book includes photos and a discography, plus artwork by Kimura Toyouji. Rittor is also publishing a piano score book with every song from "Koufukuron" to "la salle de bain". (I think I’m reading that correctly.)
I attempted to puzzle out "Toki ga Bousou Suru" on my own, but I’d love to see what a published arrangement might yield. Band scores aren’t entirely accurate, but the Shiina Ringo books I’ve got seem to reflect the songs all right.
I never have picked up any Tokyo Jihen score books, though. Curious.