i think kaname would one day ask to braid or style tatsumi's hair.. and she'd end up tangling it up a little and having the braid slightly loose. but then tatsumi would love it regardless and she'd ask to braid kaname's hair,,, and it'd look Perfect. like absolutely beautiful. and kaname gets all happy and flustered but she tries to hide it. she ends up attempting to practice it herself so she can also perfect it but eventually tatsumi would just end up helping her