He seems to regain his confidence just as quickly as it faltered a few seconds earlier, both from the reassurance that his actions didn't lead to Miko getting hurt and the fact he can totally fill her in on what happened to the other guy. Eusine changes moods roughly as often as he changes shirts, and most of them - mental states and clothing alike - are garish.

"Hah! You needn't let this trouble you anymore." His grin is confident, a bit cocky even, and it probably counts as some sort of minor miracle that the jacket he's holding hasn't fallen to the floor due to his penchant for dramatic gesturing. "A wind of ill omen was blowing over the city, the day those dreadful towers revealed themselves... And so I gathered a team of like-minded individuals, a heroic rescue team to put an end to this evil once and for all! It wasn't easy, of course... but as it happens, our mutual friend was amidst the first people we rescued that day!"

Truth be told the team only consisted of himself and Starbreaker, and they sort of accidentally came across each other rather than Eusine actively seeking her out... but damn if he's not going to make everything sound even more epic than it was. He is an entertainer first and foremost.