Captivating, yet the underlying concept was very materialistic. Transferring an entire consciousness and personality through a small incision in the skull—a minor brain alteration—with a recovery time that went from seven months initially down to just two days? It’s absurd. Consciousness doesn't reside in the brain. The ending was utter nonsense. Ba Ra’s desire to transfer into Mumu’s body made absolutely no sense... Mumu’s decisions... She made everyone suffer, including herself. The neurosurgeon’s death was senseless stupidity. Absurd, pointless deaths, included solely for dramatic effect. And Shin turned out to be an unscrupulous psychopath who killed relentlessly without a shred of remorse. He let Ba Ra choose that idiotic fate—living in Mumu’s body—without saying a word to his best friend. It was all nonsense. You watch so many episodes, only for them to botch it completely at the end. A waste of time... not worth it. It was incredibly frustrating.