The sound doesn't register with him right away because of the ringing in his ears but the manticore does shift after a minute or two, ears slowly perking as he lifts his head to peer up at her.

..Why was she worried about him?

A low rumble escapes him, not a growl but more a disgruntled sound than anything else. Noctis shakily attempts to get himself upright but ends up giving up and slumping onto his side, letting out a heavy breath in the process.

His head is never going to stop aching. It's just going to explode, simple as that.