Found a Bug at Day 3, Part 3. I guess Line 162, Its missing the closing Parenthesis from "[Protagonist]".
File "C:\BlurringtheWalls-0.4.2-pc\renpy\substitutions.py", line 162, in parse
raise Exception("String {0!r} ends with an open format operation.".format(s))
Exception: String "I'll say a few things to [protagonist, and then you can take over and work your magic~♥" ends with an open format operation.