A harsh fate awaits beyond the happy times... In a world where 'today' repeats over and over, only 'I' remember that there was a day that was not chosen. The repeating 'today' is whimsical, and once 'today' ends, it resets, making it almost impossible for the 'tomorrow' that comes again to be the same day. In September, after a summer vacation that lasted two hundred days since the last school day before summer break, Ayaka feels joy in being able to meet Misaki every day. However, when Misaki receives a love letter, their relationship gradually begins to develop as the cultural festival approaches... But waiting for Ayaka, who hopes for happy times with Misaki, is an unavoidable harsh fate. And at that moment... the shocking truth that Ayaka will learn for the first time is──…!? A slightly mysterious story about the clumsy feelings of 'me' and 'her', with secrets that are central to the narrative revealed in the third volume!!