
Kanon ("Canon") is a Japanese adult visual novel developed by Key and released on June 4, 1999 for Windows PCs. Key later released versions of Kanon without the erotic content, and the game was ported to the Dreamcast, PlayStation 2 and PlayStation Portable. The story follows the life of Yuichi Aizawa, a high school student who returns to a city he last visited seven years prior, and he has little recollection of the events from back then. He meets several girls and slowly regains his lost memories. The gameplay in Kanon follows a branching plot line which offers pre-determined scenarios with courses of interaction, and focuses on the appeal of the five female main characters by the player character. The game once ranked as the second best-selling PC game sold in Japan, and charted in the national top 50 several more times afterwards. Kanon has sold over 300,000 units across several platforms.

Ayu Tsukimiya is a fictional character and the main heroine in Key's adult visual novel Kanon, followed closely by Nayuki Minase who is the only Kanon heroine to appear with Ayu on three of the official game covers released by Key. Ayu was created by Naoki Hisaya who wrote her scenario for the visual novel, and designed by Itaru Hinoue. Hisaya commented on how he thought Ayu was the one character in Kanon that he felt he grasped the best, but noted it was very difficult to write her character due to Ayu being primarily energetic. After Hinoue drew wings on Ayu's backpack, Hisaya suggested that they remove them due to spoiler reasons, and while Hinoue went along with it at the time, the wings were later included once again.

This is a list of characters from the Japanese visual novel, manga, and anime series Kanon. The protagonist of the story is Yuichi Aizawa, a seventeen-year-old man who has forgotten much of his past as a child. There are five heroines in the story, starting with Ayu Tsukimiya, who is the main heroine. Ayu is a short girl Yuichi's age that used to play with him when Yuichi was younger. She carries a winged-backpack on her back, loves to eat taiyaki, and often says her trademark Ugū catchphrase. Next is Nayuki Minase, Yuichi's cousin, who is also in his class at school. Nayuki has the problem with sleeping in, and is very hard to get up in the morning. She has had a crush on Yuichi ever since she was a child. The third heroine is Makoto Sawatari, the youngest of the five heroines, who has lost nearly all of her memories. What she does remember is her own name, and that she holds a grudge against Yuichi for something he did in the past, though not even Yuichi can remember what he did. Shiori Misaka is the fourth heroine; she is a first year in high school, though never attends class due to an illness she has had since birth. She is usually a cheerful girl who wants her sister to acknowledge her most of all. The last heroine is named Mai Kawasumi, a silent girl who initially comes off as cold towards Yuichi and others, so in effect does not have many friends. She spends her nights at the school slaying demons.

The Kanon anime, which encompasses two television series produced by different studios and an original video animation (OVA), is based on the visual novel Kanon by the Japanese visual novel brand Key. The story follows the main character Yuichi Aizawa, who has returned to the town where seven years ago he would spend his school vacations. As he used to do back then, he is living with his aunt Akiko Minase and his cousin Nayuki, but has forgotten many of the details regarding his previous visits. Over the course of the series Yuichi slowly regains these memories as he meets new friends and is reacquainted with others from his past.







