Hey when is the next chapter going to be released?

Already has been, and will be uploaded to Dynasty in 2-3 days. If you need it now, I recommend checking the scanlators site, where you can read it.

Hahaha I knew the little sister was holding back a secret. XD But that's messed up hahahaha

I love this art, where I can see more of that autor?

I read it a long time ago but now I remember the artstyle looks like the same as Higashiyama Show (Saki and Aki looks like Hikaru and Megumi from Prism)