In this guide, I explain how to reach the Happy Ending in Spy Mission: My Girlfriend, the Old Noble’s Maid. I collect the Green Key, Red Key, and Blue Key in order, then use them to unlock the final door and complete the game.
Quick Completion Guide to Trigger the Happy Ending
Spy Mission: My Girlfriend, the Old Noble’s Maid
I follow the steps below in order to reach the Happy Ending as quickly as possible.
1. Obtain the Green Key
Morning
I go to the Head Maid’s Room and inspect the picture frame on the wall. I find the Green Key behind the frame.
I go to the 1F Maid’s Room and inspect the nearby dressing table to obtain the Back Door Key.
Noon
I go to the 3F Bathroom and inspect the basket to obtain the VIP Card.
2. Obtain the Red Key
Morning
I go to the 1F Storage Room and enter the secret room inside.
I inspect the desk and obtain the key item, Letter.
Noon
I go to the 2F Room and inspect the Blue Notebook on the table covered with a blue tablecloth.
This reveals the clue needed to solve the code:
“Cute, Cheerful, Slender, Big Breasts”
Night
I can only go outside at night, so I go outside and take the boat by the railing to reach the opposite shore.
When prompted, I select the following options in order:
“Cute, Cheerful, Slender, 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 obtain the key.
Noon / Night
I go to the forest on the left side of the map and click the third tree three times in a row to cut it down.
I then enter the basement.
I enter the basement, stand on the cross-shaped mark in the center, face left, and remain still for 5 seconds.
This opens the hidden door in the basement.
I proceed through the hidden door to obtain the Blue Key.
4. Proceed to the Ending (Happy End)
Step 1
I use the fireplace in the BOSS Room to reach the second floor.
Step 2
At the designated mechanism, I use the three keys in the following order:
Green -> Red -> Blue
This unlocks the door. I open the door and enter the room to successfully trigger the Happy End and complete the game.