Kumiko Kawana did the part before the bird appear. The rest was done by Akiko Asaki. Chie Uratani did corrections on the animation of the bird leg and on Suzu face when she's running (about 25 frames in total). Hidenori Matsubara also did a few corrections.

Source : The movie gengabook

Gengabook? What is that and how do I get it?

It's book regrouping the genga from an anime with credits or comments, you can buy them in japan or on some japanese websites

https://twitter.com/181ino/status/1505468740141740032?s=20&t=cPTTpTeMuLI2qmuuigfEDQ
https://twitter.com/181ino/status/1505469363717296128?s=20&t=cPTTpTeMuLI2qmuuigfEDQ

Inoue says akiko yamaguchi is here