Well, the stuff in storehouses was incredibly boring in this game.
Shinonome Village Shinonome Village
Barrel Magatama
Curse Stone +25
Strength Jewel
Ultra Flask x2
Akatsuki Town Akatsuki Town
Skill Jewel
Mystery Jug
Fickle Charm (Abnormal Status on normal attack x1.5)
Crystal Card (2 slots, WEP 78, halves EP use on magic, STR/INT +8%)
Reimei Town Reimei Town
Speed Jewel
Mind Balm (L)
Light Loincloth (ARM 20, VIT +12%, light-based magic damage +20%)
Skill/Magic Stone +20
Asamadaki Village Asamadaki Village
Maid Coins x600
Reviving Balm (L) x5
Boulder Magatama
Mixing Board (Scoop, 2 slots, WEP 79, STR/INT +8%, Normal attacks on 2x2 area)
Hakubo Village Hakubo Village
Vitality Jewel
Ultimate Flask
Shadow Loincloth (ARM 20, VIT +12%, shadow-based magic damage +20%)
Elemental Charm (unlocks all elements, EP use x1.5)
Tasogare Town Tasogare Town
Energy Pouch (L) x4
Healing Pouch (X) x4
Blitz Stone +6
Enigma Blade (2 slots, WEP 80, STR/INT +8%, Normal attack may steal drop items)
Shinmei Village Shinmei Village
Void Loincloth (ARM 20, VIT +12%, void-based magic damage +20%)
Paralysis Stone +25
Exquisite Flask
Gold Nugget x4 (valued at 25k each)
Hakuya Town Hakuya Town
Moonlight Shuriken (2 slots, WEP 78, STR/INT +8%, Damage dealt +50% at max HP)
Almighty Charm (STR/VIT/INT/SPD/HP/EP +5%)
Money Chest x5
EXP Chest x5
The four jewels (at Shinonome, Akatsuki, Reimei and Hakubo Villages) were the only thing imo worthy taking from storehouses.
Better save the shards for other stuff on the IAP shop.