You're My Greatest Surprise

The smoke from gunpowder rose up in thick clouds, A mysterious island close to the Bermuda Triangle sank halfway into the sea following a bombardment. The opulent and dangerous castle filled with countless evils that stood on the island also sank with it, completely disappearing from the world. The formidable assassin organization known as the Shadow that terrified everyone, along with its leader, were all buried here. This self-proclaimed God of Death, standing tall in the world as it took lives at whim, was overturned in a mere day. Very few people knew that the genius assassin credited with this event was previously believed to have died in the Pacific Ocean due to a failed mission. Simultaneously, many of the Shadow's bases were blown up. Indiscriminate explosions occurring globally at the same time drew widespread attention. Aside from the participants and surviving members of Shadow, no one knew what had actually transpired. This caused panic among people across various nations f