SyKim answers the question from the public regarding Tree of Savior. The summary of the Q&A is below.

1. Chatting system is similar to a smartphone messenger and can send offline messages.
2. Using keyboard to control melee characters, their attacks are directed towards monsters nearby.
3. Using keyboard to cast spells such as healing and other damage skills, they use a method called the buff zones.
   
4. For ranged characters, their attacks are targeted to the enemy closest in front of their eyes.
   
5. You can manually target the further monster by pressing shift + cursor key.
6. Archer can move while attacking enemy, but damage may be affected depending on distances towards monsters.
7. Tree of Savior can be played on Mac if you install boot camp.
8. At the moment there is no Assassin or Thief class. However there is Rogue, Corsair and Wugushi class.