How to find expat communities in Japan?

25F moving to Tokyo/Chiba for one year to teach English. Any recommendations for where to meet other expats? For reference, I do not drink, smoke, club, or take part in typical nightlife activities. I want to meet people who like to go to cafes, explore the city, be in nature, and other simple and fun excursions.

I know people can enjoy both nightlife and daytime activities, but since I don't do the former, I'm not sure where to meet the latter.

I will also try to befriend and socialize with Japanese locals, but it's difficult as they are more reserved (to my knowledge) and I'm still working on my Japanese. Thanks in advance for your recommendations 🙂

*To be clear: This post is NOT about meeting people with the intention of dating or anything of the sort. I'm not open to that or interested at all. Only in search of friendship and good company.

by misswinta