It's not often an Isekai protag doesn't immediately regain his memories of his past life or at least become aware of his past self. The angle of being confused by the past memories and unable to properly parse them is interesting. The hint of visualizing spells through video games might lead us there, or maybe not. I find a story where he's still somewhat oblivious to his earthly life more interesting. Either way, let down that this wasn't a traditional fantasy story, but it's still entertaining.