Kidou Senshi Gundam Burai

A manga titled Mobile War History Gundam Burai centers on a young boy named Kotetsu Kisaragi, who encounters Suzuno, the daughter of an ironsmith. During a visit to her home, he discovers a mysterious group of evil demons that pose a threat to her. The narrative involves Kotetsu engaging in combat using large armor known as Tetsuki, or iron machines, in a conflict against these adversaries.