young gun

Noun

informal

(informal) A new or rising talent or star; rising star.

Japanese Meaning

若手スター / 有望な新人 / 台頭中の新星

The young gun scored the winning goal in his third professional match and immediately drew praise from veteran teammates.

期待の若手がプロ3試合目で決勝ゴールを決め、ベテランのチームメイトからすぐに称賛を浴びた。

Sense（1）

(informal) A new or rising talent or star; rising star.

young guns

（ plural ）