P.A.P.H.S.I.S., a system capable of forecast a battle in an instant and sending it to it's user's mind. However, is it the human body capable of taming such a beast? An entity of that kind must've been conceived in the heat of a war. 

Liutenant Ryouji Ishikawa is in charge of taming this system implanted in his mechanical fighter: the Steel Cavalier UMBRAL, with the objective of putting an end to the conflict between the Atlantic Union and the Russian Federation, however, will he be able to tame it without losing himself in the process? or perhaps he... will find his true self thanks to it.