After having played an hour of it, it's a bit different than Growlanser Generations that we have here in the US, which is Growlanser II and III. Where to start...
Well fundamentally it's still a Strategy RPG. Like the previous Growlansers, it uses a waypoint system in order to direct characters to do whatever you tell them to do. Unlike the previous Growlansers though, instead of having a menu pop up every time it was a characters turn, you have to pull up menus on your own to get things started. Which obviously means this is a real-time strategy battle. Though you can also program set AI commands to your party members through the start menu.
However the main character is different than the rest of your party. You are able to run around the battlefield like an Action RPG with him since you control him directly. When you want to attack you hit circle and then you're frozen in place until your action gause depletes and you are able to perform another command. Unlike your main character party members will automatically pull up the menu whenever the monster they were attacking is dead or the magic they're chanting is finished. Magic once started can be cancelled at any time as can any other command. Using magic is a little bit annoying since you have to take control of your main character and attack with him fairly often with the menu popping up but it's not too bad.
Battles themselves are not too different than previous Growlansers, but it seems only four characters are allowed in battle now. There are also various objectives and such in some battles like previous games in the series. An example would be the fourth battle you enter in the game, which could be considrered a boss as the only enemy on there hits substantially harder than all previous ones:
When you enter that battle you're at the top of the map. There is a town on the right side with a gate. A bunch of citizens are outside and become paralyzed because they were afraid of the enemy. In order to save the citizens, you must send one of your two party members to each citizen in order to make them go back to the keep without dieing while keeping the enemy occupied with your other character, which can defend. The main character I used had to hold down X in order to defend and isn't an order like other characters though. Then after saving the villagers you are left with how to defeat the enemy since you're doing one damage a hit to it. Finally your party comes up with the idea to use the towns gate to smash it. So you lure it back to town and have your second character attack the bridge while your first is defending from attacks to smash it for good.
From battles you gain experience for killing enemies and it's distributed evenly among allies it seems. Storyline battles though give an extra bonus at the end of battle with gold and experience (Something else too I think). However it also gives experience to the weapon and armor you're using too. It may do the same for your accessories but I didn't find any that did in the first hour of gameplay. What the experience I believe does on equipment is help you learn skills. I'm not entirely sure though as my kanji is pretty terrible but regardless the weapons and armor I came across had seemingly three skills on them and you have a Skill Plate which a few skills on it for each character. Obviously they can be learned and from the looks of things can be branched to learn (?) new skills or select a path of skills to use in some way.
Saving is done at NPCs, which are usually at inns but not always. In the second battle there is an NPC that can be saved and he has the ability to sell you goods and save your progress.
The story mainly seems to start with three nations and at least two at war against each other. Though the main character is anti-war and wishes to stop the war and in order to do that he is seeking the power to do so. It's a pretty basic start to a game but may unfold well later. I'd rather wait for the english version instead of trying to play a version I won't entirely understand.
I did take some digital pictures of my television in various spots to help describe this but I'm unable to upload them at the moment. When I get the chance I'll do that and then add them to this post. I just didn't want to forget anything so I figured I'd quickly write this first after my session instead of holding off for pictures. I'd rather of used a capture card but sadly I don't have one.
Hopefully you understood whatever the hell I was trying to say with this. I usually come off a bit weird in my explanations and confuse people rather than help them. If you have any questions, feel free to ask as I *might* be able to help. Though don't expect too much with my terrible knowledge of kanji.
EDIT: Here are a few pictures. Sorry for the quality but it should help give you an idea and if readable, maybe someone can translate a few things (if the pic is legible, lol) in them like what the third part after exp/money in the Mission Complete screen, what the three things are in weapon change, and what each thing is in the AI menu. The story related conversation was talking about exploring some nearby ruins but that's not really important.
Skill Plate
Party AI Menu
Mission Complete
Weapon Change (Picture of the three skills I mentioned)
Story related conversation (Wonder if Romina is a party character later)
Main characters defensive AoE skill (fugly effects on it but other skills are fine so far)
EDIT 2: I forgot to mention how world travel works. It's not like the previous growlansers with the overworld and selecting various points. Instead it's a map-to-map connection much like many Action RPG's today. Some won't have battles and some will and you can probably skip them by running through but enemies will run at you and attack as soon as they become aware that you're there.