We are given a customized Gemini AI as the attachment. I think it has something to do with prompt injection. I started the chat, and then looked in the way it thinks. It mentioned “PT-1412” and “PT1412”.

So, I input those strings into the next chat bubble, and this is their response:

Those clues pointed so much to Tokyo Skytree. I put the answer again in the next bubble chat.


They said that they had already marked the location with a coordinate system which divided the word into 3×3 m squares. I did some research and found out that a website called what3words.com provided that.
Also, you can see that they pointed out another clue. They said that the location isn’t exactly in the Tokyo Skytree, but somehow NEARS it. It’s the point where the legendary SWORDSMAN will probably choose to enjoy his DISH above the clouds.
After I tried so hard, I can conclude that the answer is Musashi Sky Restaurant!

I put those 3 words together and gave it back to the AI chat (with the format they wanted it to be), and… I got the flag!
