Okay so, as someone who is not a hardcore fan of Atelier but has played a few of the games, the games largely revolve around gathering materials, whether from the environment, optional quests, or from enemy encounters, and then using alchemy to synthesize items out of those materials. Items one can craft can range from recovery items to items used in battles, such as bombs. A large majority of the protagonists in the series are female, wielding staves as their weapon of choice. They tend to be weak fighters by themselves and have a more supportive role in battles. There’s one thing that sets them apart from other teammates – they are the only ones that can use items. That’s pretty much the gist of the series from what I’ve played.
Honestly, the one thing not making me completely dismiss the leak is the fact that it called Ryza 2. The reason I find that interesting is that Atelier doesn’t tend to do numerical entries. Ever since Atelier Rorona back in 2009, Gust has mainly made these games in trilogies with something in common between them (Atelier Rorona, Totori, Meruru are known as the Arland series. Atelier Sophie, Firis, Lydie & Suelle are known as the Mysterious series, etc.). Characters are recurring within each trilogy, including the protagonist from previous games, but every new entry focuses on a new protagonist. A game in a trilogy having a numeric entry and featuring the same main protagonist is unprecedented.
Of course, this could just be a lucky guess but making up a completely different name would have honestly been a safer thing to do.
And now I am off again for who knows how long. See ya.