I'm glad I saw screenshots of ch 16 on the author's twitter and deciding to peek my head back into this after ditching it in ch 2/3. This is the real meat and potatoes coming in and I have to say I laughed when the chapter ended.
Nao's got the wrong idea about Asumi's frequent visits to the brothel but damn this chapter is GOOD. This dork slowly on her way to finding out her feels proper.
I don't care who Asumi ends up with at this point, I just want moooooore.