First of all.
I F**KING QUIT trying to guess secret bosses.
I loved the different flowers, and how they explored how they fall into a sort of in-between of Lightners and Darkners. The theming made the chapter feel so bright and lovable. Asgore's role in the story was very cool and I loved his growth as a character, the way he reflected on his actions based off of his treatment of and from the flowers. I especially liked Aqua, Yellow, and Green (especially, Green 💚), but all the flowers were enjoyable to see. All the gimmicks were fun, and never felt like they overstayed their welcome, and I actually feel like the secret boss should have been in the platforming segments, and I hope such segments return in Chapter 6, as they were by far the most enjoyable part of the chapter. The pink coins were a bit tedious, but it was cool to keep an eye out for them along my travels. Flowery also had a cool dynamic with Kris and the heroes, and I personally believe the final battle will parallel events later in the story with the Fun Gang, although that's mostly speculation. There are many other parts I enjoy, but I wanted to put out my highlights from what I believe is the best chapter of Deltarune yet. Also Kris you a bitch for not letting me see Rudy. Oh, and rip (literally) Flowery, I guess, Ralsei will miss him very much, as he was very obviously tsundere for him.
I wanna kiss Green 💚