All Lilyverse logos are made by me:

The theme of the image is magic and fantasy, characterized by elements such as a rainbow-colored background, a lightning bolt, a crystal, and a magic wand, along with the text "Mahou Little Magic Pure GO!".

The theme of the season week is Ethnology and Imagination "Little Magical Heartsies", which evokes a magical girl aesthetic and fantasy elements. 

The theme of "Kitty Force" appears to be a combination of cats and magical girl/card game aesthetics.

Cats: The prominent use of "Kitty" in the title directly indicates a feline theme.

Magical Girl/Card Game Aesthetics: The stylized, colorful lettering, the exclamation mark resembling a shooting star, and the presence of card-like icons with various symbols (like a boot, a crown, and a heart) suggest elements often found in magical girl anime or card-based games.