Griffith had just asked him to do something. A favor. Guts had to kill Julius.

And he asked no questions, no 'why?'s, no explanations needed. He just did it. And not just Julius, but Adonis, a kid.

Guts closed his eyes while walking back to where they were currently staying, wanting nothing else but to be comforted by his wife, you. All he could see was the child's young eyes going dull as he passed away.

It got to him, the guilt and the wonder. Guts felt like he just did something really bad, realizing that when it came to Griffith, he didn't question.

When he entered your shared room, he sighed, leaving his massive sword against the wall. "You're awake." he said, surprised to see you not asleep on the bed.