I don't know why he decided to book her over the app, instead of just asking her out normally like a friend.
I guess author want to keep "rental gf" as a main theme of this manga, I don't think it's a good idea.
Aqua is more like a talented director than an actor. Makes sense considering he is an apprentice to the director for +-10 years.
Also, this manga fill the hole left by Act-age perfectly.
I am not against alabama route, but the problem is the story is going too fast.
It only took 1 chapter for Nagi to think that Sachi, from a sister, to a potential love interest.
There is no arc or a short arc, just a single chapter.