He’s done awesome work in the Japanese NLP space over the last decade which has really helped me in my language learning projects.
He maintains a mecab (Japanese tokenizer) wrapper for Python [0], has a book on Japanese NLP written for English speakers [1] and also worked on Spacy at one point [2].
[0] https://github.com/polm/fugashi [1] https://www.japanesenlp.com/ [2] https://spacy.io/