Chinatsu Amakawa is one of the second-year students at Torin High School in Memories Off: Yubikiri no Kioku
. Tomorrow, July 19th, happens to be her birthday, so developer 5pb decided to recognise this fact by dedicating an achievement to her. If you want to earn this achievement, you'll want to load up the game on her birthday:
Don't forget that there is also a Chinese version
of the title that also requires players to load up the title tomorrow for this achievement:
Players do not even have to play the game, as this achievement should unlock once you reach the game's main menu.