I don't even know how to spend Flower Gems to raise affection

But yeah, doubling up on ^ posts, just wait for the upcoming updates for easy 2nd affection gifts. The Forge is for players like myself who needed to find a way to get rid of their excess gifts.

It IS very nice seeing those stats though, they effectively raise a Knight up a rarity tier; 5* have Rainbow-level stats and 6* become super stars. I haven't seen any bugs regarding my stats; my Water Lily is in top form and now awaits Blooming (and I can't let anyone have a stronger Water Lily than me)!

The only thing right now is you can't view their love scenes; it'll proceed to start the scene, but immediately back out to a Nazuna dialogue, who comments that "something special must happened," or something along those lines.