The telescope in Hirches apartment which Kono looks through is a Celestron Astromaster. It is actually mounted upside down with the sighting view on the bottom rather than the top.
The way Gerard answers the phone, "Go for Gerard" mirrors the way the actor answered the phone in Stargate SG-1 "Go for Marty."
Elliott Gould and Scott Caan both were in Ocean's Friends Trilogy.
Title translates 'Blood Ties'