天ノ弱 (Amanojaku)

Background
This song was uploaded to Nico Nico Douga on May 28, 2011. It is one of 164's most popular songs as well as one of the most popular Gumi songs. This song was later used as a demo for MAYU.

This song will be featured in the upcoming game Megpoid the Music♯. Piano sheet music appeared in the ピアノソロ やさしくひける ボーカロイド Selection for Piano collection. This song has also appeared as sheet music in the Vocaloid Best selection series as well as having been featured in the mook ボカロ☆バンドスコア, vol.2.