"Run&Go", used as the theme song for Kit Kat Japan commercial, was released on September 15, while "We Alright" was pre-released on December 6.

[5] On the next day, JO1 announced that their fifth EP single, Wandering, was set to be released on December 15, with double lead tracks, "Bokura no Kisetsu" (僕らの季節, Our Season) and "Prologue".

[22] The second lead track "Prologue" is described as a medium-tempo ballad which expresses the idea that "it's okay to be slow, it's okay to stop, it's okay to hold hands and start walking together, and that determination marks the beginning of our journey".

[27][28] A studio version video of the song was released on December 10 as part of a week-long commemoration of the group's second anniversary.

[29] JO1 started the promotion for Wandering by performing "Run&Go" for the first time at the Best Hits Kayousai on November 11, 2021,[1][30] about two months after the song's digital release.

[31] JO1 subsequently released performance videos for tracks "We Alright" and "Run & Go",[32][33] directed by Daisuke "Nino" Ninomiya [ja].

[35] JO1 later opened an exhibition at the Gallery AaMo in Tokyo Dome City Hall the next day until January 25, 2022, to commemorate the EP single's release and the group's second anniversary.

[36] "Bokura no Kisetsu" was played as the background music of Tokyo Dome City Hall's main tree winter illumination starting on December 15.

[40] On December 11, all advertisements were up, and an image of the completed message saying "we are always one" (ぼくたちは、いつでもひとつ, bokutachi wa itsumademo hitotsu) was posted on the group's official Twitter.

[40] In interview with Natalie, a representative of Lapone Entertainment explained that the campaign was made to express the group's and their gratitude to the fans for their support and warm messages in the light of the announcement regarding Kinjo's absent.

[45][46] Due to its release date didn't fall in the aggregation period in 2021, Wandering ranked in sixth place on the Billboard Japan's mid-year single sales chart of 2022 with 533,632 physical copies sold.