also if chitose was 20 in the present, and they drifted apart when they graduated then they probably didn't meet for at most 2 years which is probably not that long so atleast they didn't have to suffer for a long while
also if chitose was 20 in the present, and they drifted apart when they graduated then they probably didn't meet for at most 2 years which is probably not that long so atleast they didn't have to suffer for a long while