English not supported. Perhaps sometime in the future the dev can start with an English Interface translation (Easiest and least expensive). If a fan base develops and increases, perhaps English Subtitles can be added (Most difficult and most expensive). See my explanation about translation.
i hear ya buddy! every once in a while i'll get a cool looking action game thinking it can't be too hard to figure out... but it ends up being a nightmare when trying to upgrade anything, they do most things in a different order on the screen too, which makes me quit to menu more times then i care to admit
I can relate. Though the non-English games have key-stroke shortcuts that are common in most of them like "Ctrl + Enter" to switch between windowed mode and full screen mode. Or "F4" to bring up the game's main menu. You just need to play with the key-stroke shortcuts to figure things out (Or learn how to read Chinese or Japanese until an English translation happens). Yeah, upgrade attempts can be a nightmare to go through.
Gameplay > 降妖神兵