Clannad, Fortune Arterial: Akai Yakusoku Recommendations
More Or Less Both Are Harem Themed Animes, With Both Having Rather Strange Things Happening. In Fortune You Have the Idea Of Mortals And Vampires falling In Love although the Mortal Boy Is Surrounded By Females In A School Environment. And In Clannad You Have A Boy falling In Love With A Girl, Whit Aspects Of Ghosts Visiting (This isn't What Happens, To Avoid Spoiling Ill Stop Here), But With A School Theme As well.
So To Summarise Both are Very Much Sci-fi Harems. Clannad Is ALOT Sadder And If You Watch The first Season You HAVE to Watch The Second, Equally As Sad!!! If