5-fungo no Sekai
Manga
5-fungo no Sekai is a Japanese manga series written and illustrated by Hiroshi Fukuda. It was serialized in Shogakukan's shōnen manga magazine Weekly Shōnen Sunday from April 2018 to September 2019, with its chapters collected in seven tankōbon volumes.
Description from Wikipedia, available under CC BY-SA 4.0. May be shortened.