Indeed, I got an old WRPG vibe from this game and figured you were trying for something like that. Yeah, non-combat option for final boss would be great, the first time I actually got all the way to him without engaging in combat at all (aside from the tutorial combat encounters). Well, if you are gonna update this game in the future, you can consider adding one, but great job, you should definitely expand on this concept and make a game with similar structure sometime :)
Also noticed that you've entered the 5th RPG Maker Horror Game Jam, so l'm looking forward to what you come up with. :) Hopefully the Theme I chose for that one is fine.