Ep 1. The Boy Who Hunts Akuma

In D. Gray-Man season 1 episode 1, titled "The Boy Who Hunts Akuma," we are introduced to Allen Walker, a young orphan who possesses a cursed eye that can see the souls of the Akuma, creatures that have been created by the Millennium Earl to serve as his army. Allen is taken in by General Cross Marian, who trains him to become an Exorcist and join the Black Order, a group of Exorcists dedicated to protecting humanity from the Akuma.

The episode opens with a mysterious figure, the Millennium Earl, creating an Akuma out of the soul of a grieving young boy. The Akuma then proceeds to attack a nearby village, killing many innocent people. The Black Order receives word of the attack and sends a team of Exorcists to deal with the situation. Among them is Yu Kanda, a stoic samurai-like Exorcist who initially clashes with Allen.

As the team enters the village, they encounter the Akuma and engage it in battle. Allen, who has been tasked with destroying the Akuma's heart, uses his Innocence, a special power that can purify Akuma souls, to do so. However, the Akuma is not defeated yet, and it mutates into a stronger form. The Exorcists continue to battle the Akuma, but they struggle to do any significant damage.

At this point, Allen reveals his own Innocence - a large claw-like weapon that he channels through his cursed eye. With his newfound power, Allen is able to deliver a devastating blow to the Akuma, defeating it once and for all. The Exorcists then use a device called a Gatekeeper to send the Akuma's soul back to the afterlife, purifying it and sending it to the heavens.

As the team contemplates their victory, they are interrupted by the arrival of a mysterious woman dressed in white. She introduces herself as Lenalee Lee, another Exorcist from the Black Order and someone who is familiar with Allen. She takes Allen and the team back to the Black Order's headquarters, where they meet with their leader, Komui Lee.

Komui explains to the team that the Millennium Earl is behind the Akuma attacks, and that he is seeking to create a powerful weapon called the Heart, which will allow him to destroy humanity once and for all. He tasks the team with finding and destroying the Heart before it can be completed.

The episode ends with Allen and the others preparing for their next mission, unsure of what dangers lie ahead but determined to protect humanity from the Millennium Earl's schemes.

Overall, "The Boy Who Hunts Akuma" lays the foundation for the series by introducing us to the main characters and their mission to protect humanity from the Millennium Earl's plans. The episode features exciting action sequences, intriguing supernatural powers, and a darker tone that hints at the horrors yet to come. It's a strong start to what promises to be a compelling and thrilling anime series.