Why does Naru calls Mai by her first name?

SomeoneS

Member
In Ghost Hunt the anime...... Naru only calls mai by her first name
istead of ms taniyama ..... but someone like masako use by her last name
for example he calls masako hara "ms hara" etc
But my question is Why? does naru only calls mai by her first name???

Thank you for those who answer <3
 
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