Kaiu Shirai

白井カイウ (romanized: Kaiu Shirai) is a Japanese manga writer born in Gifu Prefecture, Japan; his real name and birth date have not been publicly disclosed. After university he worked briefly at a company before leaving to pursue manga professionally, debuting with the one-shot "Ashley-Gate no Yukue" in Shonen Jump+ in 2015.

He is best known as the story writer of The Promised Neverland, illustrated by Posuka Demizu, serialized in Weekly Shonen Jump from 2016 to 2020 and published in English by VIZ Media. The series won the 63rd Shogakukan Manga Award for best shōnen manga in 2018.