Help me choose my next mobile game addiction

I narrowed down to these three Netmarble games, primarily because they have chat functions, guilds, and I am hooked on gacha rpgs at the moment.  Anyone here have experience or recommendations based on the following choices? Thx!

1. Seven Knights

2. Knights Chronicle

3. Destiny Knights

Nevermind, they all seem too grindey in order to keep up.  I will stick with wife simulator (aka FGO).  Cheers!

As you can probably tell, the mobile subforum isn't very active. Usually people just keep to their respective game threads.

As for your question, I've been thinking about trying SMT: Liberation Dx2. I haven't played it yet though, b/c I don't really have time for a new game.

I tried it a bit ... extremely grindey and resource intensive if you want to fuse a 4 or 5 star demon.  Gacha rates for those are pretty dire, as well.  However, app follows SMT franchise pretty faithfully in gameplay & story elements.