Not much is known about Yao Bikuni, except that she was imprisoned deep in the mountains and had a winged child, named Kanna. She also was given the curse of the Winged Ones, which was passed down to Kanna when she touched her, despite her warnings not to. Furthermore, Ryuya also became cursed because he touched her body when pulling out an arrow.

Yukito Kunisaki is on a journey in search of the Winged Maiden who was bound to the sky centuries ago, after hearing an old childhood tale from his mother. As Yukito shows his puppet show to people in an attempt to make some money, he finds himself in a small town in which he did not expect to stay very long. However, when he meets an unusual girl named Misuzu, things take a drastic turn as he is invited to stay with her. 
By staying in the quaint town, Yukito soon becomes friends with the locals. As he gets to know them better, he learns of their problems and decides to help, putting his search for the Winged Maiden on hold. With his search on hold, and his growing attachment to Misuzu and the small town, will Yukito ever find the Winged Maiden, or is she closer than he thought?
 
[Written by MAL Rewrite] 

Note: Includes episode 13, Soushuuhen (Summary).

Mother of [Megumi Han](https://anilist.co/staff/107961/Megumi-Han).

Laughs and shenanigans are on the horizon in this crossover! Fan-favorite characters from Kanon, Air, Clannad, Little Busters!, Rewrite, and more start the school year together in a new world where anything is possible. With so much personality in one anime universe, every day feels like a new kind of dream. 
(Source: Funimation)

Centuries ago, Kanna, a princess and the last of a winged race, was held prisoner in a castle as she was feared by the rest of the world. However, when she met a soldier named Ryuuya, she fell in love with him and told him of her wishes to see the outside world and to find her mother. Ryuuya attempted to fulfill these wishes. However, his efforts were in vain as Kanna was sealed in the sky through magic and cursed to be in pain for all eternity. 
Hundreds of years later, Yukito, a decendant of Ryuuya, comes to a quiet town one week before their annual festival with hopes that he can make some money. However, when he meets an unusual girl called Misuzu, he is reminded of what his mother once told him - "When you go out on your journey, if you find the winged girl's re-incarnation, you must use your power to set her free". 
Yukito and Misuzu's fates soon become intertwined with each other, with each developing feelings for the other. However when Yukito realizes Misuzu's connection to the past, he must decide on whether to leave, or to attempt to break the curse that has bound Kanna in centuries of pain. 
[Written by MAL Rewrite]

Yaobikuni