On one level I get it. In his shoes I probably wouldn't be keen about going off to fight wyverns. But at the same time...we're 11 episodes in. He knows Fel can take of this without breaking a sweat. What's he worried about?
Probably a good thing for Sui to be more like Fel. More characters in this group need some guts. One character freaking out quite a bit is probably enough
.
At least the heroes don't seem like bad people. In their own ways worried about the MC. Which admittedly is fair considering all the things going right for him and he's still freaking out quite often. Almost feel bad that they can't find a good meal. But they seem to be having a decent time themselves.