Since I mod all the other Yo-kai Watch games it's been a while since somebody's had to verify a run of mine. Three crashes (minor ones in chapters 3 and 9 and a few minutes in chapter 10) and losing to Fudou (I quit to title to keep my items) are the reasons the IGT is a little off, so there's certainly time to be saved but I'm not going to revisit this time for a little while.

Splits (done on the save screen at the end of each chapter, aside from the last one): 16:03, 41:28, 1:27:39, 1:50:58, 2:24:04, 3:13:57, 3:39:00, 4:32:07, 5:07:57, 6:29:44