家の裏でマンボウが死んでる (Ie no Ura de Manbou ga Shinderu)

Background
Ie no Ura de Manbou ga Shinderu-P's first work, about the singer finding a dead sunfish in their backyard. Ie no Ura de Manbou ga Shinderu-P got his P name from this song.

Due to its strange title, it made Daily VOCALOID Ranking #522, and quickly rose to 2nd place the next day, in Ranking #533. It also made Weekly VOCALOID Ranking #94, where it ranked 4th place.

This song entered the Hall of Fame at 12:36 on August 16, 2009, a little more than one month after its upload.