Alright, how's this. Ten'soon and Sixth of The Dusk. Go.
all riiight, so they both have to be pretty fluid to ADAPT TO THEIR RESPECTIVE SITUATIONS OF DOOM&GLOOM (in TenSoon’s case, sometimes literally) and they both are used to Environments that Try to Kill You (less so in TenSoon’s case bc he’s a kandra and can adapt really well but Still) and TENSOON can LIVE LONG ENOUGH to ACTUALLY MEET SIXTH so it’s PLAUSIBLE. PRACTICALLY CANON ALREADY AMIRITE. and THEY BOTH DON’T TALK A LOT so they BOND OVER THE LOVE OF SILENCE IN THE RIGHT MOMENTS. also both probably used to seeing their own body/manifestation of their body dead. so their SENSES OF HUMOR PROBABLY ALIGN GREAT. also THEY BOTH SEEM REALLY TIRED OF EVERYTHING SO THEY COULD TAKE A NAP TOGETHER.