This is a postcard book featuring bonuses from Airi Suzuki's January 2026 calendar. It includes 30 "unreleased cuts" that weren't in the calendar. It has a special feel with a hardcover specification! It was a limited sale at HMV & BOOKS online and at the release commemorative event, and is already sold out. Brand new, unopened. B6 variant size (120 x 176mm) ⚠︎The calendar itself is not included. It will be wrapped in cushioning material for shipping.