Clannad: The Past Path (2011)

A fan-made visual novel based on Key/VisualArt's' Clannad, taking place years prior to the events of it. The story follows Okazaki Naoyuki, and on the canon route, culminates in the story of Okazaki's loss of Atsuko. Contains multiple endings based on choices with a non-canon bonus romantic route included.

Storyline

The year is 1985. Okazaki Naoyuki hates his unfair life. A high school student, he has been readmitted to Ushinawa High after a year living as a shut-in. His neighbors, his classmates and his teachers all look down on him and he despises them for it. But, on his first day returning, he meets a girl on his way to school and his life changes in ways he never expected it could…