1) Kono Chikyu no Tsuduki wo
2) Days
3) Ren Ai Kansoku (LIVE ver. from KOBUKURO LIVE TOUR 2011 "Ano Taiyou ga, Kono Sekai wo Terashitsudukeru Yoni.")
4) Kono Hoshi no Tsuduki wo (Instrumental)
5) Days (Instrumental)
The duo's last physical CD single release was last July's Ryobu .
Prior to the physical release , the A-side was 1st released digitally on 19th July .
Kono Chikyu no Tsuduki wo was chosen to be used as the official theme song to promote Expo 2025 , that will be held in Osaka from April to Oct 2025 .
2 B-sides are included in Kono Chikyu no Tsuduki wo . The 1st B-side Days was 1st released digitally in March while the 2nd B-side is a live version of Ren Ai Kansoku that was recorded from KOBUKURO LIVE TOUR 2011 "Ano Taiyou ga, Kono Sekai wo Terashitsudukeru Yoni." .
Kobukuro's 34th single Kono Chikyuu no Tsuzuki wo is the official theme song for Expo 2025 . Featuring a simple melody that everyone can hum along to , the song drums up hope & anticipation for the opening of the world expo in 2025 .
Describing Days & Kono Chikyu no Tsuduki wo is like night and day as both songs are completely different from each other . While Days is more classic Kobukuro , Kono Chikyu no Tsuduki wo reminds me of their previous single Ryobu where both tracks' music styles are not something I expected from Kobukuro .
In some way , Kono Chikyu no Tsuduki wo follows in the same music vein as OsakaSOUL . Both songs are upbeat peppy numbers which also showcased how vocally talented Kobukuro is , even after being in the business for so many years .