The Reconnaissance Corps took the oath to join the League, with one hand on his heart and the other hand behind his back. Because the Reconnaissance Corps has the biggest casualties among the four corps, it is necessary to be prepared for sacrifice when joining the Reconnaissance Corps.

The reason why he became a terrier was that when he was fighting the monkey in the later period, the head of the regiment shouted, "Give your heart and let the soldiers launch a suicide charge against the monkey to cover Lirui's sneak attack on the monkey." As a result, most soldiers were stoned to death by monkeys, which became brainwashing slogans, and it was derived that Alvin was the stalk of the ancestor giant.

Extended data:

Story background:

107 years ago (743), the natural enemy "Giant" suddenly appeared in the world. Faced with the crisis of survival, the surviving human beings fled to a place and built a triple wall.

People have enjoyed 100 years of peace in this isolated environment. Until Eren Yeager was ten years old, a 60-meter-high "super giant" suddenly appeared, which destroyed the city gate with overwhelming force, and then disappeared instantly. The ferocious giant rushed into the wall to prey on human beings.

Allen witnessed people and his mother being swallowed up by giants. With unspeakable hatred and hatred for giants, he vowed to kill all the giants. Two years after the fall of the Berlin Wall, Allen joined the 104 training corps to learn the skills of fighting giants.

During the three years of training the corps, Allen has a strong spirit that others can't match in the training soldiers of the same period. Although Allen has seen hell with his own eyes, he bravely challenged the giant and got his wish, joining the long-awaited investigation team.

Just as he dreamed of walking outside the wall, the giant who destroyed the wall appeared.