Empyrean

After waking in a hospital bed with no memory and only a photo of his past, Raiden Simuriani, a fifteen-year-old boy, is sent home only to find that he lives in a technologically advanced mansion with no record of relatives. Curious about his past, Raiden searches his mansion and speaks with his talking appliances for answers. But when Raiden finds a lone, battered room in his mansion containing a chest, he quickly realizes that this chest may in fact hold the secret to his past, present, and future.