Here is the full list of all 12 Would you like to run an idol café? achievements.
Inspect Kuu's Castle
(Un)Happy little accidents
Enjoy Ichigo's cooking
Meet Mayuki and Kuu
Listen to some Music
Find out what Mayuki is doing
Get a nice rest
Let Kuu see into your future ...?
Hug of encouragement
Now you finally get it
Let her express her feelings
Did she see it coming?