completed

おきけも！2017 (OKIKEMO! 2017)

The founder's history places the 2017 gathering within the annual Chatan-era run that began in 2016 and continued through 2019; a 2017 attendee also recalls participating. The reviewed sources do not establish an exact date or venue for this edition. Source: https://jmof-channel.themedia.jp/posts/12725597 ; https://en.wikifur.com/wiki/OKIKEMO