Here is the full list of all 31 Dream Date achievements.
Unlocked Rina's CG
Unlocked Yurui's CG
Have all of Rina
Have all of Yurui
Welcom to Dream World
Find the kitten again
Win the favor of Kashima
What kind of uniform？
Feeding of Rina
Is Rina on purpose？
Rina is jealous
Super size idol
dol is the king of the stomach!
The idol of hard work
The idol is sick
Outdoor hot spring with mixed bath
First touch
It's a real kiss
Dispel the uneasiness of Kashima
Have all of Kashima
Reward after cleaning?
Active Rina
Skilled Rina
This soda is all over the place!
Be strongly kissing
Sensitive idol
Unlocked Kashima's CG
Find the kitten