The error occurs when the game is run on a pc without Korean installed due to some codes being in Korean.
The error may be fixed if Korean is installed on the pc,
but I understand that this is not the solution you are looking for.
I started fixing this issue just after I read about the error on the forum.
I will provide a patch in two days.
I sincerely apologize for the error.
If any similar type of error occurs, posting on forum may spoil the storyline to other users,
so please send me the images or video files to [email protected]
About English and Japanese Support Error
Source: Steam Community (opens in a new tab)