This guide will feature information on how to unlock every picture, to be able to always watch them, whenever you like.
On your first playthough you will automatically unlock most of them. There is just one you can miss and two you will miss for sure, as the game has 3 different endings, each of which rewards you with a final picture. Each ending is achieved by doing more choices in favor of one girl than the other girl.

The first picture you might have missed out is this:











You will be rewarded with this one by sitting next to Sayaka when having lunch, so choose not to go to the roof.


When sticking with Sayaka throughout the story you will receive this picture:











Just make sure to stick with her, whenever a decision is in favor for any of the two girls.

• Pass Sayaka the note
  
• Sit next to her for lunch
  
• Rescue her first
  
• Choose her to be the prettier girl

When sticking with Hikari throughout the story you will receive this picture:











Just make sure to stick with her, whenever a decision is in favor for any of the two girls.

• Pass Hikari the note
  
• Go to the roof, instead of sitting next to Sayaka
  
• Rescue her first
  
• Choose her to be the prettier girl

When not having preferred any of the girls throughout the story you will receive this picture:











Just make sure to even the choices in favor for any of them, so that two go in favor of Sayaka and two in favor of Hikari. I choose to:

• Pass Sayaka the note
  
• Go to the roof, instead of sitting next to Sayaka
  
• Rescue Sayaka first
  
• Choose Hikari to be the prettier girl

Congrats

You have now unlocked every single image. If this helped you get the last one missing, make sure to like this guide.

Thanks