On April 28, Roto Brewery announced on Instagram that, after being invited by the adjacent Saken Roll Kunimaya at BASEGATE Yokohama Kannai, it will host a collaboration event with Hakkaisan Brewery Co., Ltd. According to the post, Roto Brewery will sell beer made by Hakkaisan Brewery, while the Saken Roll side will sell sake and gin.

Saken Roll Kunimaya at BASEGATE Yokohama Kannai is presented as a shop where visitors can enjoy a wide variety of alcoholic drinks along with snacks that pair well with them, making it a place in Kannai's new district where people can cross over and enjoy drinks from different genres. This project seems like a natural extension of the shop's concept and Roto Brewery's character.

Roto Brewery is a brewpub that began brewing in 2018 in Kamiooka, Konan Ward, Yokohama, and is known as a brewery attached to Menya Tenku. While it has produced craft beers rooted in the local community, Hakkaisan Brewery has continued beer brewing since 1998 alongside its flagship sake "Hakkaisan," and also offers Rydeen Beer and ohoro GIN. With beer, sake, and gin all gathered in one place, this collaboration offers drink lovers the pleasure of comparing different beverages. The announcement image indicates a May 4 event date.