I know there's something wrong with Saki each chapter. Logically thinking, if she really looking Jun as her child, she should've never been willing to tease him. She also doesn't move away when Jun push her over, and that face like disappointed yandere failed plan panel make me shiver. Is Saki...
Shortly, Mikadono and Nakano sister's combined plot. Even though it's cliche the art is gorgeous (and also boobs) so definitely I put it on my reading list. Let see how it goes in 10 ch.