As a PC only guy who has never heard of this game, tell me why I should be excited about this (not trolling, genuinely curious).
It is a charming strategy title.
The thing that makes it special are the little touches. For example every unit in the game has a little bit of backstory and a bit of personality to them. One character might perform better when they are near girls, another might perform worse. Some people perform poorly under pressure and miss shots, some people always deliver for you.
Combined with the art-style, it all feels so "alive" that you forgive the games many shortcomings and enjoy the experience.
The shortcomings? Well there are a few things you need to be prepared for...
Firstly the game is incredibly poorly balanced. A few missions are hard the first time, but once you work out the "Tactics" it is basically broken in terms of challenge and scoring.
It is anime. It is "good anime" if you know what I mean, but you still get things like a cute pig mascot thing that keeps popping up. There is a beach scene and a magical girl with giant breasts. You need to be able to deal with this.
The story is nice enough, but doesn't make a huge amount of sense. You need to just kind of roll with it all.
Mechanically, there are several flaws which were fixed in later games. For example larger maps have no way to advance your back units, besides manually moving them forward one by one or returning all the way back to base. This encourages you to use broken tactics, because it is otherwise a pain.
What all this adds up to will depend on how engrossed you get into it. I loved it, flaws and all so I think it is certainly worth at least trying.
<insert please don't buy from Russian keys, actually support Sega rant here>