The game is an up to date English localization of a Japanese freeware game that has gained a cult following over the internet. There has been some slight changes in regards to both character selection (one character is now select-able by the player that in the past could only be gained through random select) and censorship (faster animation on some exposing moves, slight costume change, etc.) Otherwise the game plays much as it has before only with less installation hassle and a clearer translation so fans who already own it may not find this version worth picking up except to support the developer.
That said the gameplay is fairly enjoyable and those wishing to try it out without jumping through dozens of hoops getting the Japanese version to work on western computers should feel free to give this one a try. It plays like an old school fighter but with an emphasis on using your support character to help you in battle with some rather tricky combo moves. If you've enjoyed games like Skullgirls you would probably like this one as well. The animation is great and is actually very pretty to look at.