Itsuki Yuge is suddenly summoned to the magical world of Granvania to save it from evil Impurities. As the savior from another world known as "God's Gift," he and his Star Children are the only ones capable of banishing these Impurities. For Itsuki to return to his own world, he must save this one with the help of the Star Maidens and Star Children!

Thanks to the rising popularity of the PhoneDroid — a device which features augmented reality (A.R.) — the age of advanced technology has finally reached Tanegashima. On that island, Central Tanegashima High's Robot Research Club is about to have their club disbanded. Despite their predicament, Kaito Yashio, one of only two members in the Robot Club, couldn't care less and would rather play a robot fighting game all day. His counterpart, the reckless club leader Akiho Senomiya, ignores Kaito’s apathy as she strives to keep the club from being disbanded by completing their giant robot.

CRYSTAR is an Action-RPG developed by FURYU Corporation. Rei fights her way through the afterworld of Purgatory to rescue Mirai, the little sister that she killed. To resurrect her, Rei makes a deal with Demons to combat Revenants and Specters—the tormented Souls of the dead. CRYSTAR’s unique game mechanics allow the player to harness the power of grief. Use Rei's tears to craft weapons and armor as well as summon a Guardian to protect her in battle. Rei's weeping gives her the strength to fight as she searches for her sister’s lost Soul.