About Kianas birthdays on game story : r houkai3rd - Reddit About Kiana's birthdays on game story The game starts in 2016, arround july and august Kiana was born on 1998 wich means she was 17 in chapter 1 Now, there are only some few official and canon dates, but in theory chapters 5 to 9 happen in december 2016 wich means Kiana turned 18 before, during or after awakening her herrscher powers