Onimusha 3 - All 36 EcoSpirit (Ako) Locations [Guide]

If you want to maximize your gameplay experience in Onimusha 3 then you'll need some assistance from Ako, and to be able to benefit from her you'll need to collect Ako's vests, you'll be surprised that the vests cannot be used directly; they need to be injected with the 'EcoSpirits'.
Each vest requires certain amount of EcoSpirits to work, there're 36 scattered in the whole game, if collected all then every vests will have enough EcoSpirits to inject.
Timestamps:
00:13 Mt. Hiei.
00:54 Sewers.
02:19 Sakai.
03:07 Notre Dame.
04:39 Undersea Temple.
05:15 Boulogne Zoo.
06:44 Mont-Saint-Michell.
08:40 Oni Mansion.