The official demo featuring Bruno and Clara, the first Spanish VOCALOIDs for the third engine. The song was composed in collaboration with Facto y los Amigos del Norte, a Spanish band from Barcelona.
The song's original PV was controversial due to negative feedback on the mascots designs. During the promotional period a contest was held, the winners would get a copy of either of the VOCALOIDS. However, at the end of the contest, the winning fanwork resulted in being the official redesigns for both mascots, despite the initial claims from the company that they would not be.