This tease would be followed up by an announcement made of the official music video, which would be slated for release on the following day.
[8] Hayakawa would directly request "January 1st" to be a single and a music video released by the band.
[9] The music video for "January 1st" was released alongside the single on 8 August 2019, and was directed by Koh Yamada.
[11] The video starts out with frontman, Masato Hayakawa, walking up from the ocean on the beach during the night to join his bandmates to perform the song.
These scenes are intertwined with Hayakawa singing the song during the day on an escalator, under a bridge, and in the sea on the same beach while also scaling up stairs in a well which symbolises moving on.