Leave One If They Don't Answer the Phone
This page is the CodyCross answer for the clue below from Welcome to Japan, Group 579, Puzzle 1 (Pikachu Festival).
Question is: Leave One If They Don't Answer the Phone
and the answer is: VOICEMAIL
Word Meaning:
VOICEMAIL — (uncountable) A computerized interactive system for storing, processing and reproducing verbal messages left through a conventional telephone network.
Definitions from Wiktionary.