再教育 (Saikyouiku)

Background
The song was first uploaded on September 2nd 2012; and is Neru's ___ work; and along with Tokyo Teddy Bear, Abstract Nonsense, and more, is among some of his most notable songs. It currently has over 300,000 views; and achieved Nico Hall of fame (exceeding 100,000 views) in a short time (a few days) and is still climbing up.

Re-Education was uploaded as one of the tracks for the compilation "Vocaloconnection"; which was released a few months before. Unlike Akuno-P or Yanagi-P whom upload the songs for their compilation a day after the compilation's release, Neru released it a few months after.

It may or may not be related to Abstract Nonsense, for the girl with the black hair resembles her. Tokyo Teddy Bear on the other hand, references Abstract Nonsense as well, so in a way, it can be said that the three songs are connected with each other.