Congratulations!
The Yusha fight is meant for the people who like to explore every single nook and cranny, grind levels and want to meet a fitting challenge, so I'm sorry it was this painful lol. There's actually a hidden mechanic in the fight that makes it much easier, and is related to the "meta" way of dealing with single powerful enemies. Either way, you beat him with enough brute force and I applaud you xD
I didn't want to add many large side quests since this is a very story focused game without a quest tracker (aside from the journal I added in the final release), and the ones involving the beast-people villages were actually ideas I was saving for a possible sequel to the first novel, which I just ended turning into a game.
I still plan on adding a third village and more post-game content btw. But that will have to wait a little as I'm developing a new game from scratch now. You can check my Instagram if you wanna see what it's like: @tiagoxningenjanai
And well, thanks for playing my little game to the end. I hope it was fun! ^^