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