Here is the full list of all 14 Sakura Succubus 5 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Get offered the girls' sweets
Meet Stephania on the balcony
Let Elizabeth wash your back
Let Elizabeth clean up the mess
Take a walk with Hifumi
Alarm clock in maid uniform
Have a call with Yue
Meet Elizabeth and Stephania
Attention at the airport
Let Cosmos cheer you up
An unexpected confession
Or whatever you might call them
Will Hifumi accept?
Hifumi - the undefeated Karuta Queen