Eccentric Rintaro falls into a depression after failing to save Kurisu, but then a neuroscientist offers him the chance to interact with an AI copy.

征历1935年，欧洲大陆被东西两大武力强国一分为二。他们分别是实行君主专制的东欧罗巴帝国联合（简称“帝国”）和提倡民主共和的大西洋联邦机构（简称“联邦”）。为了争夺欧洲大陆的霸权，两大集团爆发了规模宏大的战争，史称“第二次欧洲大战”。就当整个欧洲国家都被卷入战火之时，却有一个小国宣布中立，试图独善其身，它就是卡利亚公国。只是，在这个疯狂的时代，又有谁能真正置身事外？卡利亚因此遭到帝国入侵。 为了拯救美丽的故乡，居住在卡利亚边境城市的青年维鲁金•吉由塔毅然加入义勇军。他的父亲曾是第一次欧洲大战的英雄，籍着命运的安排，这个立志成为自然课老师的青年也披上了戎装，投身到历史的洪流中去……

The peaceful realm of Azeroth stands on the brink of war as its civilization faces a fearsome race of invaders: orc warriors fleeing their dying home to colonize another. As a portal opens to connect the two worlds, one army faces destruction and the other faces extinction. From opposing sides, two heroes are set on a collision course that will decide the fate of their family, their people, and their home.