Sienna Merdein/History

**SPOILER WARNING!**

Sienna had been raised by elves and learned magic from them during her childhood after they realized her immense talent.

At some point in her life, she was recruited into the Hero's party by Vermouth, becoming its fourth member.

Together with the party, she would journey through Helmuth and defeat the Demon King of Carnage, the Demon King of Cruelty and the Demon King of Fury.

On their way to the Demon King of Incarceration, her companion Hamel sacrificed himself to block Belial's attack and protect Vermouth. Hamel's death affected her greatly to the point that she would constantly reminisce about him despite hundreds of years passing.

After the war with the Demons was over, Sienna joined the rest of her comrades to erect a grave for Hamel near his hometown. She was also invited to the Magic Kingdom of Aroth at this time, where she became the youngest person in history to rise to the position of a Magic Tower's Head Wizard. She would spend her time going through all the magic texts in Aroth, rewriting them and fixing their mistakes. She would also take on three disciples she would teach magic to, Theodore Throne, Vice Osman, and Frilla Helen.

## Heavy Spoilers

Hundreds of years later, Sienna noticed someone intruding into Hamel's grave. After they killed her familiar that was protecting it, she left Aroth enraged. She was perplexed to find out that the intruder turned out to be Vermouth. He killed her familiar in order to lure Sienna to the grave and take Hamel's necklace from her. This resulted in a battle between the two former comrades.

In the end Vermouth won by piercing Sienna from behind which left a big hole in her stomach and took the necklace from her. Sienna used leaves of the World Tree to escape to the Elven Domain where she intended to heal herself. Unfortunately, her movement was detected by one of the three Demon Dukes, the Black Dragon Lord Raizakia, who was aiming for the dragon heart on her staff, Akasha. He managed to track her location and attacked the Elven Domain. Sienna, still weakened, came out of hiding to send Raizakia to another dimension. Due to her current state, she wasn't able to accomplish her goal, though, and instead ended up expelling him to a dimensional rift. In a last-ditch effort, Raizakia launched a breath attack before being banished to the dimensional rift. Sienna and the elves got caught by the attack and became heavily poisoned/cursed. Sienna was able to synchronize with the World Tree, though, and made herself as well as around hundreds of elves go into a slumber to prevent the curse from spreading further.

Move forward to the present, Eugene found a clue left by her (a leaf of the world tree) in his/Hamel tomb and finally got to find her during a journey with Kristina. Her real body is still in slumber but there's a portion of her ego she left behind just like what she did in Aroth. She told Eugene that the only cure for the curse is by eliminating the source itself, which is Raizakia. Unfortunately fighting him would be too much for Eugene at that moment so he had to put it on his backlog until he became strong enough.

Before that though, he had to find Raizakia's precise location in the dimensional rift, as not even Sienna herself knew where she had actually sent him. But that's something he could still do. So he set off on a journey to Hellmuth to find some clues in Raizakia's castle. And it was there that he met Raizakia's daughter, Rai Mira. Eugene initially wanted to kill her but after finding out that she was actually just an innocent, sheltered child, he changed his mind and brought her along to the estate.

Later a friend from a barbarian tribe visited the Lionhearts and asked Eugene to help him investigating the case of mass ritual that's happening in the forest. Turned out Edmond Cordrett (one of the three great warlocks, along with Amelia and Balzac) was the one behind it. Edmond somehow found out about Raizakia's circumstances and by taking advantage of the internal strife of the barbarian tribes, he wanted to absorb some of Raizakia's power for his ritual to propel his own strength to demon king's level. And the situation finally escalated into a civil war between the tribes, in which Eugene, Kristina, Lovelian, Melkith, Balzac, and Cyan participated in.

But the fight didn't end yet. After killing Edmond, Eugene decided that it's finally time for him to face Raizakia for real as delaying any longer would bring more harm than good. He knew this fight would be immensely risky, especially because he had to do it alone as the dimensional rift would be too dangerous for anyone else, but he should still have a chance since Raizakia himself had been weakened after his fight with Sienna hundreds years ago.

Well the thing is, Raizakia actually found out about what Edmond wanted to do so he also messed with the ritual and used it to recover his own strength. Eugene ended up having to stack Ignition on top another just to get an upper hand against him. He would've ended up dead if it not for Sienna helping him at the last moment as his body already became broken due to the crazy recoil.

### Present

After Eugene found a leaf of the World Tree left by Sienna in his past life’s coffin, he ventured into the Samar Forest to look for the World Tree with Kristina Rogeris.

After some time, they found an elven village and met Sienna's brother, Signard. He told them that he could use the World Tree’s leaf to find the World Tree. With the World Tree's leaves that he got from his past life’s coffin, Eugene (and Kristina) left the elven village after he promised Signard he would take the elves that resided in the village under the Lionheart main family’s care.

The World Tree's leaves led Eugene and Kristina to show them the way to the Elven Sanctuary. Inside the World Tree, Eugene found Sienna injured and barely alive. He tried to heal her, but it was fruitless, so Kristina attempted to heal her with all her might. However, a sudden burst of light came from her, and an eight-winged angel appeared behind her, which was Anise. She performed a miracle and let Eugene meet Sienna in her unconscious mind. Although her real body was still in slumber, a portion of her ego was left behind, resulting in the two being able to enjoy a happy reunion.

Sienna told Eugene that she got hurt seriously and the reason she was sealed. To cure the poison residing in her body, he had to eliminate Raizakia. Sienna then taught Eugene the method to unseal Akasha so that it might help him in his journey. Unfortunately, fighting him would be too much for Eugene at the moment, so he had to put it on his backlog until he became strong enough.

Before fighting Raizakia, he had to locate the Black Dragon that was trapped in a dimensional rift. He eventually met Ariartelle, a young dragon. She installed a dragonic spell on Akasha’s dragonheart that would help him find Raizakia's precise location. However, to activate this spell, he needed to have something that was connected to Raizakia. He set off on a journey to Helmith and found Raizakia's daughter, Ramira. Eugene initially wanted to capture her, but after finding out that she was actually just an innocent, sheltered child, he changed his mind and brought her back with him to the Lionhearts' main estate.

Later, a friend from a barbarian tribe visited the Lionhearts and asked Eugene to help him investigate the case of a mass ritual that was happening in Samar Forest. It turned out, Edmond Codreth was the one behind it. Edmond somehow found out about Raizakia's circumstances and, by taking advantage of the internal strife of the barbarian tribes, he wanted to absorb Raizakia's power with the ritual to increase his own strength to a Great Demon King's level. The situation finally escalated into a civil war between the tribes, in which Eugene, Kristina, Lovelian, Melkith, Balzac, and Cyan participated.

After killing Edmond, Eugene decided that it was finally time for him to face Raizakia for real, as delaying any longer would bring more harm than good. He knew this fight would be immensely risky, especially because he had to do it alone, as the dimensional rift would be too dangerous for anyone else, especially Kristina. But, he thought he should have a chance to win since Raizakia himself had been weakened after having been trapped for nearly 200 years.

Unfortunately, Raizakia found out Edmond’s motive, so he also messed with the ritual and used it to recover his own strength. Eugene ended up having the need to stack Ignition on top of another just to get an upper hand against him. At the very last moment when he was about to die, Sienna appeared and helped him recover from the recoil. Together, they fought together and defeated Raizakia, thus succeeding in saving Sienna.