I highly recommend you watch the saga first
I recommend you before watching
1 - Yes! Precure 5 / can be divided into 5 days
2 - Yes! Precure 5 GoGo! / can be divided into 4 days
3 - Kibou no Chikara: Otona Precure '23 / in 5 hours
simply watching the yes precure 5 saga, even with the participation of other precures, was simply a 9-day journey, which warmed my heart.
A sequel would be a dream.
Following the development of all 5 characters was very satisfying, even though I watched something from 2007/2008, I thought the animation at the time was still very good for today.