[Reducing Mosaic]GAJK-001 A high school girl being bound and trained in a warehouse. Started working part-time to help out at a familiar café, but now all she sees are training tools and changed peaceful days... Noma Nana

Nana, a high school girl living in a rural town, made it a daily routine to stop by her favorite cafe after club activities. One day, she was shocked to learn that the store would be closing and told the owner, 'I don't want everyone's place of rest to disappear! Let me help out,' and made an offer. The owner gave in to Nana's insistence. From that day on, her life of working part-time after school began. A few days later, while cleaning the store, Nana noticed a hidden storeroom. She sneaked inside and saw the owner's secret...