Description
Nanayon personifies the AK-74 assault rifle and leads a group from Akaganekou, also called Red Steel High School. Her name originates from the Japanese words for the numbers seven and four, reflecting the model number of her firearm form.

She believes the students of Seishou Academy have forsaken their true purpose as weapons and leads her team to confront them during a class trip to Atami. This encounter erupts into a major battle in the shopping district, where Nanayon directly faces Funco in a firefight.

When the human teacher Genkoku steps between them to intervene, he is shot but remains unharmed, as their bullets cannot injure him. After this event, Nanayon and her group retreat from the battle, declaring they will return another time.

As the embodiment of the AK-74, she represents a modernized successor to the AK-47, designed for the 5.45x39mm cartridge and adopted by the Soviet Union in the 1970s. She commands a team composed of variants and derivatives of the AK-47 platform.