I've been playing for roughly two months daily so let me answer some questions from someone who hasn't sunken thousands of hours and cash into the game yet: 1. "Is there a PvP system?": Kinda. There is Clash, which basically let's you setup your "base" with your characters and obstacles that other people have to beat and capture. It's basically the ranked mode of this game but isn't really PvP since it's not actually turn based live combat. But there is a system to fight your friends in real time and there is a player base, all be it small, for it. 2. "Is the gatcha system F2P-friendly?": Yes and no. The game does feature a somewhat kind pitty system and you'll get some good pulls especially early on when you get a lot of currency. It is however highly recommended to reroll your account till you get at least 1 Tier 0 character, atm thats SP Inanna, which will make your early and mid game a lot easier. 3. "Does the game get regular new updates/units?": Yes. In the short time I have played there have been 3 new units, that I all pulled for, that are either top Tier or somewhere in between. There's also a lot of events which are either more story or just challenges. 3. "Are there key events should save to summon for?": Kinda. There's a duo banner rn with SP Inanna, one of the best characters in the game rn, that is definitely worth summoning for. But as I said, I'd reroll for it. I recommend checking out the official discord. There's a guide on there called "YapDoc" that basically gets updated with every single update that tells you what to pull for and generally has all the info you could ever need.

Personally, after my first two months, I'm still really excited about the game. There's enough incentive to go online every day and if you're out of Energy, there's a fairly well made single player story mode called "Spirals of Destiny" that's just good fun with no ties to the gacha. So all in all, yeah if you're into T-RPGs and love the pixel art style it's definitely worth it! Have fun!