Spy Mission My Girlfriend: Happy Endings & All Keys

By / September 24, 2026 / Endings / Spy Mission My Girlfriend the Old Noble’s Maid / 2 minutes of reading

In Spy Mission My Girlfriend the Old Noble’s Maid, I can reach the Happy Ending quickly by collecting the Green, Red, and Blue Keys and completing the final sequence in the correct order. In this guide, I show the route I follow from the first key to the Happy End.

How to Get the Happy Ending

I follow the steps below in order to collect all three keys and unlock the Happy Ending.

1. Obtain the Green Key

Morning:

I go to the Head Maid’s Room and inspect the picture frame hanging on the wall. The Green Key is hidden behind the frame.

Green Key hidden behind the picture frame in the Head Maid's Room

Still in the morning, I head to the 1F Maid’s Room and inspect the nearby dressing table to get the Back Door Key.

Noon:

I go to the 3F Bathroom and inspect the basket to obtain the VIP Card.

VIP Card location inside the basket in the 3F Bathroom

2. Obtain the Red Key

Morning:

I enter the 1F Storage Room and go into the secret room inside. I inspect the desk there to obtain the key item called Letter.

Letter location on the desk inside the 1F Storage Room secret room

Noon:

I go to the 2F Room and inspect the Blue Notebook on the table with the blue tablecloth. This gives me the clue required for the next code:

Cute, Cheerful, Slender, Big Breasts

Blue Notebook clue needed to obtain the Red Key

Night:

I can only go outside at night. Once outside, I use the boat beside the railing to travel to the opposite shore. When the choices appear, I select them in this order:

  1. Cute
  2. Cheerful
  3. Slender
  4. Big Breasts

3. Obtain the Blue Key

Morning:

I go to the flowerbeds on the right side and inspect the third flowerbed from the left to get the key.

Third flowerbed from the left used during the Blue Key route

Noon / Night:

I head to the forest on the left side of the map and click the third tree three times in a row. After cutting it down, I can enter the basement.

Third tree in the forest that opens the path to the basement

Inside the basement, I stand on the cross-shaped mark in the center, face left, and stay still for 5 seconds. This opens the hidden door.

I then go through the hidden door and obtain the Blue Key.

Hidden basement door leading to the Blue Key

4. Trigger the Happy Ending

After collecting all three keys, I go to the BOSS Room and use the fireplace to reach the second floor.

At the mechanism, I use the three keys in this exact order:

  1. Green Key
  2. Red Key
  3. Blue Key

Using the keys in this order unlocks the door. I open it and enter the room to trigger the Happy End and complete the game.

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