Stuck outside that locked gate in Hamamatsu Hill? You’re not alone. The Mountain Temple Key is one of those quest items that’s easy to miss if you don’t know where to look. This guide breaks down exactly how to unlock Ii’s Memento, grab the key, and clear out that enemy base filled with yokai.
What is the Mountain Temple Key?
The Nioh 3 Mountain Temple Key unlocks a specific enemy base in Hamamatsu Hill, located near the Mikatagahara Junction shrine. Inside this locked area, you’ll face a Dark Realm challenge packed with yokai and a tough Revenant boss called the Aggrieved Warrior.
How to Get Mountain Temple Key Nioh 3
Here’s the straightforward path to obtaining this essential item:
Step 1: Complete Fated Land Myth
Before you can start Ii’s Memento, you must finish the Fated Land myth mission. Once that’s done, Ii’s Memento automatically unlocks in your mission list.
Step 2: Talk to Ii Naotora at Hamamatsu Castle
Fast travel to Hamamatsu Castle and speak with Ii Naotora. She’ll hand over the Mountain Temple Key and ask you to clear yokai from a temple north of the castle. This conversation triggers the entire questline.
Key Pointers:
- Prerequisite: Fated Land myth completion required
- Location: Hamamatsu Castle
- Quest Giver: Ii Naotora
- Reward: Mountain Temple Key (automatic)
Mountain Temple Key Location – Where to Use It
Now that you’ve got the key, here’s how to reach the locked enemy base:
Getting to Hamamatsu Hill Enemy Base
- Teleport to the Mikatagahara Junction shrine in Hamamatsu Hill
- Head northeast up the stone stairs from the shrine
- Follow the winding path as it curves left and crosses a bridge
- Look for the locked gate at the bridge’s far end
The Mountain Temple Key opens this gate, granting access to the Dark Realm area inside.
Clearing the Mountain Temple Dark Realm
Once inside, you’ll need to defeat five yokai to dispel the Dark Realm. Here’s where each enemy hides:
Yokai Locations:
- Yokai #1: A few steps past the entrance (skeleton type)
- Yokai #2: Hiding near a corpse on the far right side
- Yokai #3: Waiting at the top of the staircases
- Yokai #4: Concealed by a corpse on the upper right stairs
- Yokai #5: Spawns at the temple center after defeating the first four
After clearing all yokai, climb to the temple’s highest point to face the Aggrieved Warrior Revenant.
Ii’s Memento Rewards Nioh 3
Completing this mission nets you solid loot:
- Samurai’s Locks
- Sincere Buddha’s Gauntlets
These rewards make the effort worthwhile, especially for builds focusing on specific gear sets.
Quick Tips for Success
- Bring healing items – The Dark Realm drains your Ki regeneration
- Scout carefully – Yokai hiding near corpses are easy to miss
- Save resources for the Revenant boss fight
- Fast travel back to Hamamatsu Castle after winning to claim your rewards
FAQs
No, Ii’s Memento only unlocks after finishing the Fated Land myth. Complete that mission first.
It’s in Hamamatsu Hill. The locked temple gate sits northeast of this shrine, across a bridge at the end of a winding stone path.
Since this unlocks after Fated Land, your level should already be appropriate. Just ensure your gear is upgraded and you’ve stocked healing items for the Dark Realm.
Yes, the fifth yokai spawns only after defeating the first four. Then you must clear the Dark Realm before accessing the Aggrieved Warrior.
Like most Nioh 3 side missions, you can replay it, though initial completion rewards are one-time only. Replays still offer experience and loot drops.
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