Emmanallain reminds me of Jannequinard, especially at that age (AST/ 3 in line in the Hallianart family) he means well and want to help his family ... but nobody really ever expected much of him and there isn't much pressure since he's the "third" son. Meaning for all his life Artoirel was groomed to be the successor, Haurchefant was the model knight and was tasked with Camp Dragonhead.

I am pretty sure that House Fortemps have been the social Pariah of Ishgard and most of his friends/ acquaintances have shunned him now that the shock has settled and the other High Houses are scheming and making sense of things.

Also, i don't think Artoirel is scheming or planning to betray the WoL, afterall, people thought Haurchefant (especially the Fortemps)was scheming too due to how we all pictured Ishgard then.

I am curious though, is Artoirel's slight change in personality due to localization? Does he act the same in Japanese/ EU?