Sanryokyo Kakuchu

 is one of the protagonists in Pika☆Pika! Etoile♥Love Pretty Cure!. Kakuchu, or calls as ~Chitchi ~yu (ちっちゅ), who is Cure Spectrum, a mysterious Cure who possible to joins the team later or defintely not. She was a legendary Cure who needs to save the Magic World, however, she was killed and therefore disappeared until a mid-finale. Later, she was revived and she gots new powers and abilities, and being the part of the team if possible, but her identity didn't revealed at the four Cures.

Her pretty Cure ego is Cure Spectrum, represents Rainbow Diamond.

Cure Spectrum
Kyua Supekutoramu (キュアスペクトラム) is the pretty Cure form of Kakuchu. She represents the Rainbow Diamond.

Transformation
Pretty Cure! Magical Stage! Start! is Kakuchu's transformation phrase in ''Pika☆Pika! Etoile♥Love Pretty Cure!''.