Now, the original source material, the Kiss x Sis manga by Bow Ditama, has apparently ended in Japan with the newest installment in Monthly Young Magazine.
The property began back in 2005 in Bessatsu Young Magazine and will have twenty-five volumes total when it’s released on November 18th, 2021.
Originally airing in 2010, Discotek Media picked up the rights to the Kiss x Sis OADs – back at the end of 2020.
It was a welcome moment because little of this property had been brought over before though there’s clearly interest.