Non-predatory gacha, with an incredibly enjoyable story (though it is still being developed), enjoyable characters (and characters you enjoy hating), and gameplay that is easy to grasp and fun to master.
The soundtracks are absolutely godly, the events are fun, and is a game that will make you look forward to each patch.
I've been supporting it since its earliest days, and will continue to support it until it proves to me I should do otherwise. It hasn't yet.