Need Help & Input with a backgroundstory [SR5] Options

[Medicineman]

Hello Chummers
I need a little Help and Input for a fellow Player :
I'm playing a mystic adept ( a Thai ) with the Neg quality Corp Born SIN who escaped the clutches of evil Wuxing.
He is a NAN Wannabee , Friend of the Cascade Orcs and moved recently to Seattle to start his Carreer in the shadows .
Now a fellow Player of mine intends to play a similar Char:
a Dwarfen Mystic Adept with Totem Bear, a Healer and protector with German /Norwegian Roots. (His Schamanism is more
Nordic Rune magic) He also has corp Born SIN (with Neonet).
Even though we will end up playing at different Tables, we want to intertwine our Backgrounds and need some Input, some Ideas .Because we plan to have a Multi-User-Session sometime we want to have something in common, something that unites us.We already have the same Fixer but thats not quite enough, thats why I'm asking for advice/ideas

He who dances with other Shamans
Medicineman