100 Nichi Go ni Shinu Wani

100 Nichi Go ni Shinu Wani (100日後に死ぬワニ) is a Japanese web manga series written and illustrated by Yuuki Kikuchi. The series, which depicts a crocodile's last 100 days before his death, was self-published on Twitter between December 2019, and March 2020. A single tankōbon volume was published by Shougakukan in April 2020. An anime film adaptation produced by TIA, titled 100 Nichikan Ikita Wani (100日間生きたワニ), was scheduled to be released in May 2021, but was delayed to July 2021, due to the COVID-19 pandemic.

Manga
Written and illustrated by Yuuki Kikuchi, 100 Nichi Go ni Shinu Wani was published on the author's Twitter account from December 12, 2019, to March 20, 2020. A single tankōbon volume was published by Shougakukan on April 8, 2020.

Film
An anime film adaptation produced by TIA, titled 100 Nichikan Ikita Wani (100日間生きたワニ), was scheduled to be released on May 28, 2021, but was delayed to July 9, 2021, due to the COVID-19 pandemic.

Reception
The manga was ranked 28th in Kadokawa Corporation's Da Vinci magazine's "Book of the Year" list in 2020.