Aleth

Aleth is the fifth romance option in Lovewood. They are the travelling merchant who frequently stops by Liebwald and is a good friend of Kaileen.
Aleth has a curse that makes it impossible for them to speak out true statements, instead talking in a lie whenever they try. This curse was a result of an alchemy accident, and they get around it by speaking mainly through written text on a portable chalkboard, paraphrasing their sentences as questions, using sarcasm or using the occasional BSL sign as shorthand in conversations.