I went into this really wanting to like it. A mystery about forgotten memory, a noir story throughout it with big giant mecha! That checks so many boxes for me - but its execution is dreadful. First let's work back from the giant Mecha. The art is cool, but the battles are indecipherable. The art is done in a way that you have to constantly be trying to piece together what the machines are doing in the worst possible way. It makes the fights probably the worst part of the whole manga - you dread to see the Mecha come about. There is also no tension really, the main mecha is always going to win and it's not even really hinted at otherwise.
The characters are okay. The main character is basically just "negotiator batman but a big mecha instead of batman equipment". You have the butler who is basically your Alfred, and randomly brutal as hell. Dorothy gets added in the second book and she is the best of the story. There are times where they explore her and add comedy to the situation - those are the only worthwhile parts of this manga which stop the score from sliding even further.
The story itself are a bunch of one shots with lame villains. One or two are recurring, and with the "main" recurring one being the lamest one. I didn't care at all for them, there are no real story arcs besides surface level crimes, and you already know how they are always going to end.
The mystery remains unsolved really by the end. I was hoping for a mystery noir with cool robot fights. I got undecipherable robot fights, no mystery solved, and lame characters. Pass.
