At the Dengeki Game Festival 2017 event in Tokyo on Sunday March 12, more details were revealed about the film, including additional cast members, the theme song artist, and a fourth key visual.
Pada acara Dengeki Game Festival 2017 di Tokyo pada hari Minggu 12 Maret, rincian lebih lanjut telah terungkap tentang film tersebut, termasuk lebih banyak pemain, artis lagu tema, dan visual key keempat.