"Shi" and "yon" are the two different ways to pronounce the number four in Japanese. "Shi" is also the way to pronounce the kanji for death. So Ran speed-dials 4 for "death/dead body." Easier to remember that way. >XD

Icka is making evil Japanese word puns. Too much Japan time for her (or maybe not enough?). *whispers* I think the anime has gone to her brain. ^.~ XDDD