Unmei no Hito~ Fated Person

Because of accidental magic that he uses on his research, he brings along his three siblings to an alternate timeline. For his siblings, it is a strange world where everything is misplaced and wrong. But for him, it is a chance. After all, he remembers this world. For him, this is the past that been erased, yet still live in his memory. And The Perfect Prince and The Quiet Little Girl over there are the people that he wants to save most.   He won't fail this time!