He started off his time in game helping out at the clinic but then... Nastrandir happened.

Yukio has been around, but avoiding people as much as he can without making it obvious he's trying to avoid everyone. He's constantly busy, gardening or collecting plants, drying and processing plants, making notes on the local flora and fauna, practicing knife-throwing or archery or martial arts, reading through basically every guidebook or textbook he can find in the library.

He's polite and nice and has a friendly smile and is good at small talk, but at this point even at first glance there's definitely a very obvious impression of being kind of stressed out, he clearly hasn't been sleeping or eating properly for a while.