13 years after the anime ended. Tomoya Okazaki is sick of his life, he is depressed as could be without them, without Ushio or Nagisa. He decided to leave earth for a new place to call home, Eridanus II. This would be the place for him to start over anew. However, Tomoya had no clue what he was walking into, Eridanus was going to be a battlefield very quickly. Alternate timeline
Crossover - Halo & Clannad - Rated: T - English - Sci-Fi - Chapters: 11 - Words: 49,419 - Reviews: 4 - Favs: 5 - Follows: 3 - Updated: 5/24 - Published: 3/16/2014 - Master Chief/John-117, OC, Tomoya O., Youhei S.