Kawata also writes the Hokuto no Ken: Ichigo Aji comedy manga spinoff of the Fist of the North Star.
The manga inspired an anime as part of the DD Hokuto no Ken 2 Ichigo Aji+ (DD Fist of the North Star II + Fist of the North Star: Strawberry Flavor) television anime program in 2015.
The writer/artist duo are the creators of the Neon Genesis Evangelion: Legend of the Piko-Piko Middle School Students manga, which ended in August 2018 with five volumes.
The announcement noted that both manga will be comedy manga.