Tomoya is the male protagonist of Clannad. Due to his habit of always arriving late to school, skipping classes during the day, and staying out all night, he has been labeled as a delinquent, or a young person who defies authority. Ever since his mother, Atsuko, died in a car accident when he was young, Tomoya has been living with his father, Naoyuki, with whom he argues constantly. Tomoya was injured during a fight with his father three years ago; since then, their relationship has been very distant. While walking to school, Tomoya met Nagisa Furukawa, since then, his life changed. Nagisa describes him as someone who is mean and bad-mouthed, but actually kind-hearted.
The major story in Clannad is about Tomoya learning about the point of having family and friends. Throughout the game, he interacts with other people, going through with their problems. After solving their problems and making them happy, light balls (symbol of happiness, human emotions in the form of light in illusionary world) will float around them, which Tomoya lifts his hand and collects. The light orbs that Tomoya collects will appear in the Main Menu of the game.
In the movie, Tomoya describes his dream more often than in the anime.