The shadow had been waiting for this very moment.
He knew getting in control of the body was tough and though the first seal was broken, unless the other two were also broken, he couldn't really take full control. And even if the other seals were broken, there was a chance the virus was too powerful and it'd kill the host body, meaning they'd all die. So, he couldn't risk that.
However, now that he was in full control and Helio was unconscious, this was the perfect opportunity to kill Hyora, make sure Helio trusted him, and strike precisely at a moment when he least expects it.
So- he grinned- he grinned so much that his cheeks formed slight tears. Enira was already back up on her feet and she was healing him, so he didn't have to worry about wounds at the very least.
He was also in close range to Hyora so- So, he dropped the sword and grabbed Hyora almost like a lover grabbing his partner on a dancefloor.