The song was first uploaded on August 14, 2011, and is Neru's seventh work uploaded. The video reached 1,000,000 at 11:07 AM on June 20, 2012 and has since been covered by various utaites. This was also featured in an EXIT TUNES compilation Vocalocluster, V Love 25～Aperios～, and VOCALOID 超BEST -impacts-.
To celebrate Kagamine Append's first anniversary, Tokyo Teddy Bear's single was released by KARENT.
The song could also means that the main protagonist (played by Rin) most likely ran away from home and their family, possibly thinking that they have a 'crazy filled mind'. They also could've hated their life, and wants to change. In the song, they struggle to why they have and need to change, the lyrics; "Make a fool of yourself." Either means this is their parents speaking to them, or this is their thoughts. They could have possibly thought that changing, can only make them a mere fool.
In other lyrics, the protagonist is mentioning why they just can't be loved—possibly by their family, and wishes to cut their face off with a scissor.
The teddy bear could also represent the singer, the stuffed toy is nearly torn apart, accompanied with several stitches and the like. This symbolizes the suffering of the singer, broken and torn, said in the lyrics of how they just want to be loved. At some parts of the song, it says that they want to be "patched" up and be fixed, in other words—they thinks of themself as the teddy bear, made to be torn apart, only to be patched up again. At some parts, it hints that if they pulled the last string that keeps the teddy bear together, symbolizing the end or possibly, their death. The ending of the song would be left to the viewers.
This song is responsible for the Mild Violence warning in Hatsune Miku -Project DIVA F, as in the song, a silhouette of Rin is impaled by a large sewing needle. It is also one of the reasons behind the game's T rating.