よっしゃ

interjection

gotcha; alrighty; got it; OK

Colloquial interjection expressing understanding, agreement, or readiness. Often used when one has grasped something or is about to start an action. Similar to よし, but more casual and energetic.

• 「これ、お願ねがいね。」「よっしゃ、任まかせて！」

  "Can you handle this?" "Gotcha, leave it to me!"

• よっしゃ、やるぞ！

  Alright, let's do this!