Cian didn't dodge Sol's sudden actions; he allowed Sol's finger to touch his forehead while he closed his eyes. At the same time, he responded with a bitter smile.
"It's resisting the sealing force causing it to slowly weaken."
Sol frowned deeply when he heard that, his face still slightly flushed. With the tip of his finger on Cian's forehead he sent his Soul Energy inside Cian's mindscape where his soul was located. It was much easier to restore the damage to the sealing rune and strengthen it than create a new one from scratch.
However, this was extremely dangerous for Cian. Giving someone access to his mindscape was a suicide decision since his soul could be wiped out with only a thought from that person.
Nonetheless, he didn't show an ounce of resistance against Sol. It was strange how trusting of Sol he had become. Even Sol himself wasn't aware of his actions. If anyone was observing this scene from a third-party view, they would think the situation was quite strange.