DonBob said: Have you been looking at the current date lately?
Yeah, I know about the May 14th = Koishi thing. Thought it would be funnier to think of it as an area code.
Meganekko + KoishiKoishi
A wordplay.
"1" is pronounced as "Ichi", and "4" is pronounced as "Shi" in Japanese.
Also, "5" is written as "ご (go)". This hiragana is similar to "こ (ko)".
So, "こいし" (Ko-I-Shi) → (Go-I(chi)-Shi) → "514."