先せん頭とうに立たつ

expression, godan verb (-tsu)

take the lead; lead a group; be in the vanguard

Used when someone physically or figuratively stands at the front and guides others, often implying initiative and responsibility.

• 彼かれはいつも先せん頭とうに立たってチームを引ひっ張ぱる。

  He always takes the lead and pulls the team along.

• 新あたらしいプロジェクトでは、彼かの女じょが先せん頭とうに立たつことになった。

  She ended up taking the lead on the new project.