This promotion was based on a collaboration with singer-songwriter Dai Hirai. We produced a music video and a song in collaboration with Dai Hirai and the “cling” (the clear metallic sound that resonates when the cap is opened) of “Line 2”, a representative lighter of S.T.Dupont. The collaboration song “SUN DAY” was remixed by Shinichi Osawa. This campaign received a lot of exposure as it was officially communicated by Avex.