Lee Sion's life changes twice in a single morning.

First, he wakes up in the body of a silver-haired middle school girl.

Then he discovers an online forum that shouldn't exist.

The Swordsmanship Forum is home to legendary swordmasters who died in worlds far beyond his own. They're opinionated, endlessly competitive, and more than willing to tear apart his technique, right before teaching him something that should have been lost to history.

Armed with impossible swordsmanship and hiding behind the ridiculous nickname "Genius Beautiful Girl Swordswoman," Sion begins climbing the Tower, shattering records and leaving hunters wondering where this mysterious prodigy came from.

The forum, meanwhile, is having the time of its afterlife.