43+ hours is sorta a speed run estimate atleast in my runs
If you breed, run around, train your teams you will/can get over 100 hours but you won't be bored because there
are a lot of event and hidden items so, if you are a spelunker like me, just expect to get atleast 70+ hours till the end
but it depends also mostly on how you train your team and who choice.
So what I like to say Welcome to reborn and might you have a long and hard but funny playthrough and stay, here in reborn.
Have fun and stay sane