This song is Hachi's fourteenth upload; it has entered the Hall of Legend. The song is a remake of Aldebaran and Träumerei, two previous non-VOCALOID songs by Hachi. The pair of songs were designed as a pair, with one cheerful while the other dark.
The official PV starts out with the protagonist and their sheep riding into "Wonderland". The protagonist then goes on to sing about "picking up a new light" as they make their way through town on their sheep with their lantern in tow. The duo happen across several masked figures in black clothing and invite them along on their adventure as the protagonist says their catchphrase, "haineriiranra". Eventually they pass on their lantern and head out of town through a tunnel, as the song ends with the protagonist singing again about "picking up a new light".
Hachi was inspired by Hayao Miyazaki's ambiguous endings and, as a result, intended the song to have various interpretations similar to Miyazaki's work.