Kaylune is a pet adoptable site that centers around NPC interaction. Just like with the explore function during events here, you can talk to NPCs, but also build a friendship, or create enemies. You can also start quests for NPCs for kwin, the main currency. There's also clovers, which is similar to baubles here.
There's currently a launch festival going on as the website started 10 days ago. You can get lots of items to unlock a special title, badge or kael (adorable plushies).
Some cuties: