File:Awakened Joo shiyoon.jpeg

Summary
Joo Shiyoon (주시윤), known as Akiyama Shiryu (アキヤマ • シリュウ) in the Japanese localization,ritagonist of Counter:Side. The latest apprentice of Commander Hilde, he is an 18-year-old employee employed by Coffin Company and a talented but lazy member of the Fenrir Squad. A tricky attacker who can counter enemy attacks from anywhere in the battlefield. His main weapon is the long blade he wears, but he mostly uses only daggers with the excuse that the blade can break his pinky fingernail. He always claims that he's an ordinary employee, but no one actually believes it. He is the only member in Fenrir Squad after Hilde disappeared. Many people in the company assume that he only retained his position to keep getting his salary without working.

The leaders of the 52-minute Week movement and the maintenance team's Drunk-on-duty Incident claim that they had spoken to him before their actions. The Managerial Department is suspecting that he instigated the protest because he wanted to create justifiable reasons to slack off. Joo Shiyoon has cut off the old chains of anguish and completed himself. A striker specializing in countering enemies' Basic and Special skill attacks, he's armed with the Dragon Fang and Yeonhwa, the sword-and-sheath pair that's been handed down among the Truth Seeker bloodline. He's always been an unreadable enigma to those around him. Even he himself didn't know what he wanted. He had scores to settle, but he was reluctant. He wanted to forgive his enemy, but he couldn't find a reason to. Then, he was forced to face his dilemma at the border between life and death, and his aimless wandering was over. He was freed from the old pain that had tormented him for a long time. He's found enlightenment. Now, he no longer hesitates to draw the sword that he received from his mother. Nor quietly excuses himself from the battle scene without others knowing. Instead, he now fights at the front lines, protecting his friends at the most critical moment.

But of course, he claims that nothing about him was changed.