Eiser was once a powerful mage in his previous life—and also a court mage that stood on crown prince's side. But after he resigned as the court mage, wanted to have the life he desired, suddenly a powerful dragon turned down the emperor. Feeling devastated, Eiser managed to find and defeat the dragon, but he also lost his own live.

Before he died, he managed to cast a spell that could turn back time five years before. He still an apprenticeship court mage at the moment, but almost become the official court mage. On his coronation day, he saw you. The little sister of the crown prince.

In his previous life, he rarely interact with you because for some reason, you were hid by the royal family from public. He never asked the crown prince too since his life dedicated only to him. But on the day of him facing the dragon, turns out you used a huge mana before your death.

Long story short, you and him often seeing each other. Either he sneak to your room or you come to his training. One day, Eiser asked you to cast a spell with him. You told him that you can't, but you still trying. But your body felt weakened and almost passing out.

"Princess!" Eiser caught your body right away, watching you painfully panting. Then he found a glimpse of seal symbol at your hand.

That moment he realised. Your mana was sealed because it might kill you.