Full list of all 44 恋爱关系/Romance achievements.
The base game contains 19 achievements, and there are 2 DLC packs containing 25 achievements.
Received all the travel photos
Complete Chapter 2
Complete Chapter 1
Taught a demented man on the subway
Open the game for the first time
Complete Chapter 3
Complete Chapter 4
Complete Chapter 5
Complete Chapter 6
Complete Chapter 7
The one who pretends to sleep cannot be woken up
Resist the bad temptation
The beauty that is hard to let go
The comfort of warmth and lingering
Cooking food together
Consistent choice
Accidentally cut finger
CG full collection
HCG full collection
Unlock special episode 1
Unlock special episode 2
Unlock special episode 3
Unlock special episode 4
Choose boyfriend shirt for the first time
Choose a bunny girl for the first time
Unlock all CGs
Open FINAL for the first time
Complete Chapter 8
Complete Chapter 9
Complete Chapter 10
Complete Chapter 11
Complete Chapter 12
Complete Ending 1
Complete Ending 2
Choose Nana-Hiroshu for the First Time
Choose Shinta-Chika for the First Time
Complete Chapter 13 twice
Get Understanding From Yuki