Ryosuke Takahashi

In 2014, aliens revealed themselves to request trade with humanity. In exchange for limestone, they would provide a consciousness-controlled general-use robot known as an "Exoframe." Cheaper than an aircraft, tank, or firearm, and easy enough for anyone to operate, the "Exoframe" spreads change throughout the world in the blink of an eye... (Source: Official site)

Set in a far flung medieval-looking world of Arst, Prince Jordy Volder takes up the fight against the ambitions of the conqueror Marder. Jordy uses the legendary giant robot "panzer" Galient, which is one of many panzers that have been preserved underground for thousands of years. Using an army of advanced robot panzers, Marder is conquering all of Arst in preparation of his plan for dominance of the Crescent Galaxy. (Source: Wikipedia)

Yuji Kaido was diagnosed with a serious disease and since there was no cure for the unknown illness, he was cryogenically frozen.