Chest Hunt: The Narrows
There's four additional chests on the total chest count that I didn't put in this (or any) video--they're the four that you are required to pick up for the main Enkanomiya quest line. If you've unlocked the boss in this area, you have those four chests.
Timestamps
0:00 Chest #1
0:48 Chest #2
1:09 Chest #3
2:01 Chest #4
2:55 Chest #5
3:33 Chest #6
4:29 Chest #7
4:47 Chest #8
5:27 Chest #9
6:47 Chest #10
7:09 Chest #11
8:09 Chest #12
9:46 Chest #13
10:40 Chest #14
11:06 Chest #15
13:32 Chest #16
14:24 Chest #17
16:06 Chest #18
17:27 Chest #19
17:44 Chest #20
19:12 Chest #21
19:48 Chest #22
20:20 Chest #23
21:08 Chest #24
22:07 Chest #25
22:38 Chest #26
23:28 Chest #27
24:23 Chest #28
24:53 Chest #29
26:13 Chest #30
27:41 Chest #31
28:25 Chest #32
29:06 Chest #33
29:45 Chest #34
30:36 Chest #35
31:05 Chest #36
32:24 Chest #37