Keisei Koiwa Craft Sakeden (KKCB) introduced its "rain discount" in an Instagram post. The discount is based on rainfall at the time of arrival, at 1% per 1 mm of rain. The post also mentioned a pair of visitors from Taiwan who enjoyed their drinks without realizing they had received a 9% discount, which gives a clear sense of the shop's playful approach.

The venue is a beer pub at 6-15-8 Kita-Koiwa, Edogawa-ku, Tokyo, tucked away in a back alley with a low-key atmosphere. The post says it is serving neighborhood vegetables alongside beer, and that during the summer break the weekday opening time shifts to 6:00 p.m. The second floor is presented as a private room where guests can relax and enjoy beer without worrying about the surroundings.

The main event announcement is the Toyoni Beer Festival on August 15-16 at Shinkawa Sakura Kan in Funabori. KKCB will join the festival with John from Kameido Beer, and will bring Kameido Beer and other drinks. The venue address listed in the post is 7-15 Funabori, Edogawa-ku, making it an easy weekend stop for beer fans in the area.

The post also previews other upcoming events, including the Keisei Koiwa Night Run Club on August 26, a guest-chef event on September 5, and a lasagna event on October 25. From rainy-day discounts to outside festival appearances, the post shows how KKCB mixes neighborhood beer service with broader event programming.