[He looks at the doorway more as a reflex upon noticing someone there, after all he is on the front desk to attend people if they come in, than anything else. But it doesn't take more than that for him to realize that it's Minato. Watch him jump and promptly close the journal.]
M-Minato! What are you doing here?
[Trying to smile innocently. Nothing suspicious here.]
[action]
M-Minato! What are you doing here?
[Trying to smile innocently. Nothing suspicious here.]