I'm still playing spot the flower symbolism, and the kaleidoscope in the main and Hikage ending credits are also full of flowers.

Butterflies and flowers, hmm.

Hikage actually explicitly references that in his evil soliloquy episode, which I just played!

"The kaleidoscope. A mirror that reflects a thousand flowers.

The butterflies are enthralled by its beauty... Drawn to it, like moths to a flame.

There is only one wish in my heart..."