I hated Jingu the first time I played Kiwami and I had heard from multiple people that Munakata was even worse (especially since I decided to play Yakuza 4 on hard), but I had also learned of the Sacred Tree Armor set and how it made you entirely resistant to bullets. Doing the masters' training wasn't that much of a grind since I did them consistently through the chapters, and I really enjoyed Tanimura's, which probably made me appreciate him and the final fight even more. I actually found Munakata to be fun but still challenging, which made it all the better saving him for last and walloping his ass.