If you speak Japanese and you are interested in map rendering, have a look at the newly created MapLibre User Group Japan.
Official Website: https://bit.ly/mug--jp
Twitter Space: https://twitter.com/i/spaces/1OyKAVvlgvbGb
Yasunori Kirimoto and Kanahiro Iguchi who are both MapLibre Voting Members are organizing the User Group. The plan is to create online meetups and bring people together who are interested in MapLibre. They also have some nice MapLibre swag for you!