6週1日目 決めた以上
Determination・stance・judgment
接続：普通形＋からには
If it's A then of course it has to be B
注意 / Note：All three mean “once,” often followed by responsibility, determination, or natural conclusion.
比較 / Compare：Same song: 〜以上（は）／〜上は. These models are often mistakenly chosen for each other — carefully read the 接続 and nuances above and then decide.
よく出る形 / Common form：普通形＋からには、〜。The most informal of the three forms, often used when speaking. The last part is also 〜たい・〜(よ)う.
やるからには、成功させたい。
If you do it, you want to succeed.
試験を受けるからには、合格したい。
If you take the exam, you want to pass.
挑戦するからには、悔いの残らないようにやりたい。
Having tried my best, I want to do it so that I don't have any regrets.