Ms. Lilina, the Guild Receptionist, Is Cold Only to Me.

Lilina, who works at the Adventurers' Guild in town, is a stunningly beautiful and kind receptionist who is immensely popular with everyone. Yet for some reason, she treats only Rex, a newly registered adventurer, with cold indifference, leaving him feeling dejected.

But the truth is, she simply gets awkward because she likes Rex far, far too much...!?

(Source: Kadokawa, translated)