Everything seemed to be fun and games for this girl. She was extremely excited over something as simple as sushi. However, having been mortal himself at one time, and leaving a life for an early death, Achilles realized the value in enjoying those peaceful moments. The moments that gave him a sense of calm when everything else was chaotic.
He supposed for Charybdis it was similar. They'd both done things that while that described their character, wasn't what they were all about. There were many facets to the character.
Shaking his head lightly at the girl he lead the way out the door to full-fill his end of the bargin.