Yukio

Yukio is a fully autonomous giant robot and the one and only true friend of the protagonist Tetsuo. Throughout the prolonged war against galactic monsters, the two fought side by side and earned the revered title of 'Saviors.' Despite being a machine by nature, Yukio possesses a remarkably warm and nurturing character, having long served as the emotional backbone for Tetsuo, who struggles deeply with social anxiety. A decade after Earth was plunged into an ice age, Yukio remained faithful to their promise—waiting in a vast, snow-covered wasteland for Tetsuo's return, ready to embark together on a journey in search of hope for survival.