You can find Nagasaki JETs from all over the prefecture on the Nagasaki Prefecture JETs★長崎県JET Facebook group. The group is private and restricted to current JETs so make sure to answer the membership questions when you request to join. It’s a great place to get to know your fellow JETs and find out about events and important announcements.
Make sure to also check out AJET’s Block 10 Facebook group. Along with Saga, Oita and Fukuoka, Nagasaki is part of AJET’s Block 10, which puts together awesome events where you can expand your circles and meet JETs from neighboring prefectures. For more information, head over to their Facebook page!