グランドジャンプ
A spin-off series titled "Bartender à Paris", with a new protagonist, , began in "Grand Jump" on January 4, 2012; Nagatomo was replaced by Osamu Kajisa for the series. It was collected into six volumes; the first was published on June 19, 2012, and the last on December 19, 2013. A follow-up, "Bartender à Tokyo", began in the same magazine on November 6, 2013, and was later moved to "Grand Jump Premium" on December 24, 2015. It was collected into eight volumes; the first was released on April 18, 2014, and the last on October 19, 2016. Both "Bartender à Paris" and "Bartender à Tokyo" were licensed in South Korea by Haksan Publishing and in Taiwan by Sharp Point Press. The fourth and last installment of the series, "Bartender 6stp", was serialized on "Grand Jump Premium" and "Grand Jump Mucha" from August 24, 2016 to December 25, 2019. The "6stp" first volume was published on March 17, 2017, and the latest—the fourth volume—was released on February 19, 2020.