来客 らいきゃく芳名 ほうめい ろくでしょう
raikyakuhōmeirokudeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 来客芳名録

1. Probably a guest registry.; Possibly a list of visitors.

Polite
Presumptive
Conjecture