Don't let negative reviews fool you. This series is a coming of age story for young adults ages 19-22. The pacing is just right. You don't need to show everything about the character's life to know why they act the way they do. Akari is just a shy, quiet, and anxious person. Izumi is honest with others but not himself. Yamato is dishonest with himself and others and causes a rift between him, Akari, and Izumi. The ending leaves me satisfied. Not high on my rewatch list, but still a good story.

The reason I call this a 'coming of age' is because these are adults that need to get over what happened in their past. If they are stuck in their regret about decisions they made in high school, they're not moving forward. I believe it causes a person to be stuck at the age they hold onto the regret from. While they make different decisions as they get older, holding onto their past choices just makes them regress back into the mindset they had back then. Thus, their inner mind's growth isn't in tune with their age today.