Sorry for the delay, the chapter took a bit longer than usual on my end...
I'm guessing Ch. 6 to Ch. 15 will probably make up a (still not announced) Vol. 2, which means the next chapter will probably be a introductory breather like Ch. 6 before the next arc/volume begins.
Also, I just found out this manga has a Wikipedia page, which is cool
I was spooked for the last episode but I'm glad it all ended up reasonably, Hiura wouldn't go for someone they don't know at all.
Now please Midou make a move or something since you have Hiura "secured" for you.