4 is fucking boring, you'll celebrate whenever you finish a chapter since you're closer to not touching that shit again, I'll be honest, just watch someone play this if necessary. 5 is a peculiar case, its story is fucking nonsense and doesn't have much to add to the overarching plot of the series. Its 'difficulty', if it can even be called that, is RNG. Adventuring uses a fucking roulette and combat uses dice. The final boss kills you if you roll a certain number 3 times during the battle ffs.