Kotama Brewery announced its booth at the Saturday, March 28 event in an Instagram post titled "...". The post was published at 2:18 p.m. on February 17, 2026.

According to the information shown in the posted image, the event is "DOMANNAKA 2026". The venue is Usui Pass Forest Park (Toge no Yu) (1222 Sakamoto, Matsuida-machi, Annaka City, Gunma Prefecture), and the schedule is gates open at 9:00 a.m. / start at 10:30 a.m. / end at 6:00 p.m. In addition, the post includes information on extra service between JR Takasaki Station and Yokokawa Station, access from Yokokawa Station to the venue (walking route and free shuttle bus), and ticket sales information for passage passes.

This post does not specify Kotama Brewery's beer lineup or sales method, such as whether draft beer will be offered or whether takeaway sales will be available. Still, for a Gunma-based brewery to appear at a major event in the prefecture, it should be a chance for local craft beer fans to connect with them in person.

The event is organized in a music-festival style, with transportation information and an all-day timetable presented together. If you plan to attend for the beer, it would be wise to check the official latest information in advance, along with any updates to the day’s lineup and payment methods.