If you don't already have go installed, install it with brew install go.
Run go install github.com/kinbiko/jisho-alfred@latest.
Grab the jisho.alfredworkflow from this repository and open it with Alfred to install.
Usage
ji <your search here or じ<your search here> (no space) will first list all results within Alfred, letting you quickly look up pronunciations, kanji, and English meanings.
You can then hit enter to open the selected result in Jisho.org.