[Which is a very submissive gesture, to be honest. But Vanitas doesn't seem to mind, and just lashes his tail back and forth in response, front limbs bending as he lowers his head further towards the ground and gives a chuff back.
Then he darts forward, nipping at the other's exposed belly carefully so his teeth don't actually penetrate, just slightly scrape against his hide.]
shhh shhhhhh
Then he darts forward, nipping at the other's exposed belly carefully so his teeth don't actually penetrate, just slightly scrape against his hide.]