A Japanese pilot who was supposed to be employed at Yamato Air Lines (YAL), Shin was tricked into fighting for the Asranian air force in the country's civil war by his friend, Satoru Kanzaki, by letting him place his signature in an Asranian military sign up sheet after getting him drunk at a local bar. Shin became the top ace at Area 88, though he gradually felt his humanity slipping as his time at the Area passed.

Because of this, he was cold to most of the people inside Area 88; he would make friends with Mickey Simon, Kim Aoba, Kitori Palvanaff, Roundell and his commanding officer, Saki Vashtal. All his aircraft sported a flaming unicorn head painted on the tail.