Amaim Warrior at the Borderline (Japanese: 境界戦機, Hepburn: Kyōkai Senki, "War Machines on the Borderline") is an original Japanese anime television series animated by Sunrise Beyond. A photonovel series titled Kyōkai Senki: Frost Flower has been serialized in Hobby Japan's Monthly Hobby Japan magazine since July 2021. The series aired from October 2021 to June 2022.