Hero Slayer!

Our protagonist has always wanted to get Isekai'd into a fantasy world just like in all those animes he's watched. He's always wanted to be a typical overpowered main character with a harem if sexy women following him on his adventures to defeat the demon lord! And one day his wish finally comes true!.... Not really. Instead of being reborn as a child with amazing magic potential or being summoned as another world's hero with cheat like abilities, he ends up waking up in a giant test tube! Instead of being greeted by a beautiful princess or loving parents or even a freaking knight in shining armor, he wakes up in an abandoned facility all by himself. Can our protagonist still get the fantasy life he's always wanted? Can he still get the girl and save the day? Can he be a hero of the people? That's all going to be pretty hard to do when his body already comes nerfed, lacking in the ability to even communicate properly! But he'll figure things out! ...probably!