Alan and his team have been investigating a case related to an ancient legend that mentions a powerful Guardian. This guardian is said to possess unimaginable supernatural abilities, protecting a forgotten land. Alan is very interested in this legend and hopes to take the opportunity to reveal more unknown truths.

One day, as Alan and his team delve into an ancient castle to investigate, they unexpectedly encounter the mysterious Guardian. The Guardian's name was Sebastian, and he looked young and handsome, but the vicissitudes in his eyes showed that he had lived a long time.

Through their conversations with Sebastian, Alan and his team learn the amazing story behind the legendary Guardian. It turns out that Sebastian was once a powerful supernatural warrior who used his abilities to protect humanity from various evil forces. However, in a fierce battle, Sebastian is cursed by the enemy and loses his powers. In search of the rebirth of power, he embarked on a long journey of searching.

Drawn to Sebastian's story, Alan and the team decide to team up with the legendary Guardian to uncover more unknown truths. In the days that followed, Sebastian taught Alan and his team a lot about supernatural abilities, helping them to improve their strength.

Sebastian's teachings are rich and practical. He introduced Eren and the team to various ancient magics, such as elemental control, telepathy, and spatial teleportation. Under Sebastian's tutelage, Allen's team began a series of grueling trainings. They learn how to better use and control their supernatural abilities and become more adept at dealing with complex situations.

At the same time, Alan and the team also assist Sebastian in finding a way to lift the curse. During an expedition, they discover a forgotten mysterious ruin that holds clues to the curse. After some effort, they managed to lift Sebastian's curse, allowing him to regain his great power.

Sebastian is grateful for Alan and the team's help, and he promises to continue mentoring them and helping them become better supernatural warriors. With Sebastian's help, Allen's team progresses to become brave guardians of the world from the forces of evil.

As the investigation deepens, Alan and his team discover that an evil force is secretly plotting a horrific plot. This evil force seeks to upset the balance of the world and pursues endless power. To stop them, Alan and Sebastian join forces in a thrilling battle.

In the course of the battle, Eren will not only have to fight against powerful enemies, but also must face his own inner fears and challenges. Luckily, Sebastian always gave Alan encouragement and support at crucial moments, allowing him to find the courage to keep going. At the same time, Alan also learned many valuable qualities from Sebastian, such as strong faith, loyalty, and bravery. This made Allen gradually become a better leader and warrior.

After a series of fierce battles, Alan and the team finally find the lair of the evil forces and succeed in destroying their evil plans. At the end of the battle, they cheered and celebrated the victory, lamenting the growth and harvest that the adventure had brought them.

However, they also realize that there are still many unknown forces and mysterious corners of this world. In order to protect innocent lives, Alan and the team decide to continue exploring the world and revealing more truths.

As he said goodbye, Alan paid his respects to Sebastian. He promised that whenever and wherever Sebastian needed help, he and his team would not hesitate to lend a hand. Sebastian responded with a smile, expressing his belief that Alan and the team would bring more justice and light to the world.

After separating from Sebastian, Alan and the team embark on a new journey. They know they have a great responsibility to keep working hard to become guardians of more helpless people in this world. And for them, getting acquainted with the legendary guardian Sebastian will be the greatest honor and treasure of their lives.