Great Detective Kotori! I'll Investigate My Big Sister!

Synopsis

Hana's little sister Kotori realizes that the Pretty Cure always seem to appear whenever she's with Hana and Hugtan. She starts to worry that Hana might be causing the Pretty Cure trouble somehow… Kotori tells Emiru she wants to apologize to Cure Yell at least once. Then in walks Hana's classmate Fumito Senze, who happens to be a huge Cure Yell fan. Mistaking Kotori for a Cure Yell fan too, Fumito drags her and Hinase along to go looking for Cure Yell?! Try as they might, they can't find her. Kotori is fretting over her childish, accident-prone big sister, but…