Tanya Artemiciov is a talented Mage-class adventurer who just got kicked out of her party by a sexist scumbag. So what's a girl to do? Go to the wasteland and blow stuff up of course! One small problem though: she inadvertently frees a mythical Sorceress named Laplace who was sealed away for the past 300 years... Surprise! Turns out this so-called "wicked" Sorceress is actually pretty cool. Laplace wants to start a party of her own, Tanya wants revenge, and the solution is obvious: team up. It's time to kick ass, kiss girls, and dismantle the patriarchy!

(Source: J-Novel Club)