They both are needed for one thing: More pictures! You can go through two requirements.
Throughout the Adventure Mode, you should keep Cherry and Anri happy by being positive to the response.
Cherry photo themes
This should be easy at the start of "Episode 2". Make sure the location is up before you take a photo.
- Episode 2: Cafe Samba.
- Episode 3: Subaru's Hotel.
- Episode 4: Maggie's Groceries.
- Episode 5: Central Park.
- Episode 6: Mercury Club.
- Episode 7: 5th Avenue.
Anri's Photos
If you bought all pictures in all chapters you might get the same thing. The catch is to buy one per episode up to Chapter 5.
Peppermint Photo
You'll find it in "The Easy NY: Free Chapter". At the backstage, you'll be tested in the knowledge of what you know about this game. It's not particularly difficult except one wrong could have you start over again. The best tip is to play again and again every time you get a wrong answer. If you remember the right answer for each one, you'll definitely get this picture.