I won't say that the story itself sucks. Well, first game doesn't really have one, but Shuumatsuron was okay for the most part. The biggest problem this series has is that the writer cannot properly end his stories, endings are sudden, abrupt and don't bring any satisfying conclusion. Hell, they don't bring any conclusion. Plus Shuumatsuron feels a bit rushed, that's probably because they were trying to put way too much into the single game. But yeah, AkaGoei has really good humour and protag-kun is ultra badass. I would recommend reading it, if you can stomach bullshit endings.