D3 Publisher has announced 5-fun Go ni Igai na Ketsumatsu: Monochrome no Toshokan, a “sound novel” game based on the five million-selling 5-fun Go ni Igai na Ketsumatsu book series. It will launch for Switch on February 22, 2024 in Japan for 5,555 yen at retail and 5,000 yen via download.