Sofia Mertesacker

Sofia Mertesacker stands as one of the most formidable Shirogane members in Azane Academy's third year, serving as a cornerstone of the Savior Combat Unit. Hailing from the United States, this exchange student possesses raw physical power that frequently pushes her weapons beyond their breaking point, making equipment replacement a routine part of her battlefield life. Her bold, no-holds-barred fighting style is matched only by her unwavering dedication to her teammates. To protagonist Haimura Morohaya, Sofia is far more than a reliable senior—she is a trusted ally whose sheer strength and dependable spirit make her an irreplaceable force on and off the battlefield.