Morning Musume.'21 will release their new single "Teenage Solution / Yoshi Yoshi Shite Hoshii no / Beat no Wakusei" on December 8.

This will be the last participating single for member Sato Masaki, who will be graduating from the group after their one-man live 'Teenage Solution' on December 13 at Nippon Budokan. "Teenage Solution" and "Yoshi Yoshi Shite Hoshii no" were written and composed by Tsunku, while "Beat no Wakusei" was written by Kodama Ameko and composed by Erik Lidbom and miwaflower.  

The single will be available for purchase in eight different types: Limited Editions A, B, C, SP1, SP2, and Regular Editions A, B, and C. All types will include the instrumental versions of the three title tracks. You can check out the track list below.

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CD

01. Teenage Solution
02. Yoshi Yoshi Shite Hoshii no
03. Beat no Wakusei
04. Teenage Solution (Instrumental)
05. Yoshi Yoshi Shite Hoshii no (Instrumental)
06. Beat no Wakusei (Instrumental)

*Limited Edition SP1 will include "Joshi Kashimashi Monogatari (Morning Musume.'21 Ver.)" and its instrumental version

Limited Edition A Blu-ray

01. Teenage Solution (Music Video)
02. Teenage Solution (Dance Shot Ver.)
03. Teenage Solution (Making Footage)

Limited Edition B Blu-ray

01. Yoshi Yoshi Shite Hoshii no (Music Video)
02. Yoshi Yoshi Shite Hoshii no (Dance Shot Ver.)
03. Yoshi Yoshi Shite Hoshii no (Making Footage)

Limited Edition C Blu-ray

01. Beat no Wakusei (Close-up Ver.)
02. Teenage Solution (feat. Sato Masaki Ver.)
03. Yoshi Yoshi Shite Hoshii no (feat. Sato Masaki Ver.)