Clannad is a Japanese visual novel developed by Key, released in 2004. It tells the story of Tomoya Okazaki, a delinquent high school student who meets several girls whose lives he profoundly impacts. The series explores themes of family, friendship, and redemption, blending drama and supernatural elements. Clannad has been adapted into an anime series, films, and mangas, gaining a devoted fanbase for its emotional storytelling and memorable characters.