Here is the full list of all 12 Would you like to run an idol café? achievements.
(Un)Happy little accidents
Enjoy Ichigo's cooking
Meet Mayuki and Kuu
Inspect Kuu's Castle
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?