What a loser! Imagine not having a easy to obtain free cat!
That was mean.
Anyway: just enter EoC, ItF, CotC, LS, or the CD and start spam dragging the right side of the door to the right. If you're doing it right you will get a "meow". After spamming successfully enough you will get flower cat! You're very useful 100% freeze against Black enemies unit! Do note that it has single attack and that you can only obtain it's true form on the 2nd/22nd of any month at 2:22 PM, with the stage lasting for 2 minutes and only being available after beating all of ItF