For those who want to change MC Name, just open the "character" file in the game folder and searche this line :
define m = Actor(Character("Drema", color="#4287f5"), "Drema", 3, 0, 0)
Just change Drema by the name that you want to have for the MC, save and your good to go.
Edit: This only change the name on top of the chatbox, all the dialogue have the name Drema manually write in. So if you want to change the name you have to search one by one the name drema in the "script" file in the game folder and change them by your custom name. I have found only two times the name written. If i found more problem with this method i edite this post.
Edit2: I've found in the files day 2 and day 7 one time in each the name drema that you have to change.