[Crossover] The Observer

Over the long passage of time, beings known as [Observers] came into existence to strengthen the management and protection of the world. Observers do just what their name suggests: observe history, protect the Akashic Records, and maintain the balance of the world. They exchange with the [Root] for wishes that would otherwise be beyond their reach, fighting endlessly to protect the world's spark of hope, while they themselves can only sink into despair over the past. This is the fate that [42] has had to bear ever since the moment he was chosen. Masamune is one of the [Observers]. And today, too, Mr. Observer is fretting over work... "This is bad, Lord Masamune! Historical revisionists have appeared on Japan's timeline!" "Report! The Demon King has been detected stationed in Tokyo, plotting to destroy humanity!" "Your Highness Masamune! A Holy Grail-like substance has been detected in Yokohama! Should we retrieve it at once?" Japan, Japan, Japan... Why is it always Japan? Masamune has nothing to say. "Mr. Masamune! Your Ki no Kenbi unit has been wiped out!" Masamune's face instantly darkened. "Which bastard messed with my adorable Kenbi?!" Everyone: The eye clinic is to your right. Have a nice day. A story born from a flight of fancy. The protagonist is the consciousness of Masamune (not one particular Masamune blade: all Masamune blades are him). He was originally the weapon half of a certain planet-level BOSS, and has a bizarre sense of aesthetics (when it comes to anyone other than the BOSS and his colleagues). I have time to start things, but not to finish them. Stay tuned~