The Older and Younger Sister's Founder's Festival

The Older and Younger Sister's Founder's Festival is the sixth episode of Clannad. The episode was first broadcast in Japan on November 8, 2007, and in the United States on April 12, 2009.

Plot
Tomoya and Nagisa invite Fuko's older sister Kouko to the Founder's Festival. In the meantime, Fūko hands out more carved starfish to students at the festival, and her fan club helps spread the word about Kōko's wedding too. Nagisa and Tomoya meet Tomoyo, who is wearing a bear suit to find people who are causing trouble and manages to knock Yōhei out a window for bothering a girl. When Kōko finally comes, she cannot see or hear her sister.

Major events

 * It is discovered that Kouko can't see or hear Fuko

Appearances

 * Tomoya Okazaki
 * Sanae Furukawa
 * Nagisa Furukawa
 * Fuko Ibuki
 * Youhei Sunohara
 * Yusuke Yoshino
 * Kouko Ibuki
 * Akio Furukawa
 * Kyou Fujibayashi
 * Ryou Fujibayashi
 * Tomoyo Sakagami
 * Kanako (cameo)