Ep. 1: On The Hillside Path Where The Cherry Blossoms Flutter

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On the way to school one day, Tomoya Okazaki meets a strange girl talking to herself named Nagisa Furukawa. Later in the day, Tomoya has a conversation with Nagisa during lunch, and learns that she is repeating her last year of high school, and wants to join the now-disbanded Drama Club. After school, Tomoya goes to Nagisa's family bakery and meets her parents; he is invited to have dinner with them. (Source: Clannad Wikia)