At a Hygiene Exhibition, a mysterious friendship blooms between Akihiko, a boy who dreams of becoming a military doctor, and Hisao, who has an iron prosthetic arm. But each time Akihiko meets with him, Hisao's body deteriorates, and the number of prosthetic limbs increases… A retro scifi drama overflowing with darkness and beauty that questions humanity and its agency! **Award:** Won the Four Seasons Prize in the Spring 2024 Afternoon Four Seasons Awards. Originally published in the good! Afternoon June 2024 Issue.