Spoilers below
The hanging flashback is in Sissel’s route, I think?
Also Echo’s camera’s holder-thingy looks a lot like a noose as well, even more the more he’s damaged, thus why Echo and the remnant are probably the same wish (Euca probably wished to die or something when he was 6 and saw the falling star, thus why echo hopes he never gets granted) but with time shenanigans involved