Here is the full list of all 21 Corona Blossom Vol.1 Gift From the Galaxy achievements.
Complete chapter 3, part 1!
Complete chapter 2, part 3!
Play the game in Japanese
Play the game in Chinese (Simplified)
Complete chapter 2, part 2!
Complete chapter 2, part 1!
Complete chapter 1, part 3!
Complete chapter 1, part 2!
Complete chapter 1, part 1!
Complete the prologue!
Play the game in English
Boot up the game!
Complete chapter 3, part 2!
Complete chapter 4, part 1!
Complete chapter 4, part 2!
Complete chapter 4, part 3!
Complete chapter 4, part 4!
Complete chapter 4, part 5!
Complete chapter 5, part 1!
Complete chapter 5, part 2!
Please look forward to Vol.2!