^According to Touge Hiro's twitter post
here, it is the last chapter of the manga.
Oh Marika. You told Mami not to drool about Gruelle, but you did for Grunhilde
. Lolicon?
And Jackie's surname is supposed to be Fahrenheit, if you want to believe him. Characters introduction page after vol 4 used that name, and Marika called him that when she discussed with Noel.
He reintroduced himself as Jackie Fahrenheit , an Insurance investigator from Marx & Marx Insurance [probably referring to
this]when Silent Whisper was chasing Odette II that had been hijacked by Luna Lion. <---Gruelle said don't trust this guy.
Marika said it is a company with bad reputation, albeit its customers are planetary Governments and big companies. (compared to Harold Lloyd's clients which range from interplanetary wars to private travels) v4p202
...What?
Edit: Hiro said [
here] that the manga continuation will depend on the Tankoubon sales.