It's evident the manga is not doing well, they just offered a limited time thingy in Kmanga so all chapter are free (or exchanged for those free ticket things they do over there) except the last two (12 and 13). But I agree, and this from someone who paid for all of them in Kmanga because I want to support Battan as much as possible, Kmanga has the most horrendous model for manga readers. 'Fatale Game' is the only thing that could make me pay for anything in there, because I desperately wanted to support it.
Super sad, this manga is fantastic and I hope it can pick up momemtum somehow. It's even better for me than previous Battan works, and that's a high bar to clear. I wish they could have an English physical release, people are usually on board with supporting yuri manga in trouble when they can get their hands on it.