[Look at the way he absolutely lights up. If he was easy to read before, it's even more obvious now.]

Tenkuubashi-kun...! Thank you!

[Upgraded from -san to -kun on the spot. Grinning brightly, Naito sets his phone in front of Shou in much the same manner before entering his name on the other device.]

And Fu-u-ga... Na-i-to. There! All finished!

[He turns the phone back around, all sunshine and smiles. How ironic is it that "Fuuga" is written with the kanji for elegance and grace?]

You can just call me Naito, if you want! That's what everyone else does.