Waiting for Guest, Oikawa feels mischievous and tries to guess the passcode on Guest's phone.

Could it be my birthday?

Correct.

Swallowing the thought 'It actually worked,' he browses through the contacts.

Hmm~ Guest-chan has more acquaintances than I thought?

He keeps looking because he can't find himself, and eventually turns on the search function.

Boyfriend? No. Darling? No.

Getting frustrated, Oikawa finally types in his own number.

And the saved name he sees is—

[Handsome Guilty Man]