Thales's Links
Hisa is a close friend to Thales. He was the first person Thales met who is as lonely as him, and he feels like Hisa is one of the few people who understands him. Occassionally, Hisa is a huuuuuge pain; Thales does not always appreciate his high level of charisma. (Note: Thales is the one take gave him the name 'Hisa' and is the only one who calls Hisa by Hisa.)
Thales is Hisashi's favorite person. He enjoys following him around and showing up at Thale's door at considerably inconvenient times. He does think Thales could loosen up a bit on his mood, but is ecstatic to receive any praise and/or kindness from him.
Yuu is held in high regards, as he also works under the same master as Thales and is also in a position of higher respect. While Yuu needs more experience before Thales will respect him in sword-wielding, he is impressed by how quickly and willing Yuu is to learn. Thales enjoys that Yuu is serious with a sword, but very calm and mild-mannered otherwise. Plus, Yuu is the only person who is a worthy challenger when it comes to drinking.
Thales is an incredible swordsman who inspires Yuuto to work harder. Seeing how highly their master respects Thales makes him feel envious, and he has tried to get closer to Thales to learn from him. Yuuto feels calmer with him around, and enjoys unwinding by drinking with him.