If you don't make friends with Badtz Maru, you won't unlock fishing in Hello Kitty Island Adventure.

Unlocking the Flippers allows you to swim.

The rare ingredient is only found in one area and can be difficult to track down.

In Hello Kitty Island Adventure you need a mirror to change your appearance and to open your backpack to change clothes.

If you want to fix and use the Hello Kitty Island Adventure ziplines, you first need to make friends with Pochacco.

It is one of the best gifts to give My Melody.

It's My Melody's favorite gift.

It's the best gift to give Badtz-Maru.

You need the tool to dive underwater.

The Hello Kitty Island Adventure Yellow Power Crystals aren't hard to find, though the game doesn't tell you two are inside ruins.

I takes some time before you can use one.

While it's more like Disney Magical World than Animal Crossing, Hello Kitty Island Adventure is a pleasant (and occasionally pastel) time.