N2

というわけではない

It is not that, It doesn't mean that, It is not always the case

から
いうゆー
わけ
ない
It does not necessarily follow from that.
ほん
生きるいきる
ため
不可欠ふかけつ
いうゆー
わけ
ない
Books are not something that are indispensable to life.
来日らいにち
戦士せんし
ゆえ
間違いまちがい
いうゆー
わけ
なさ
そう
It doesn’t seem to be a case of “mistaken for an arrival- country demon warrior”… (Note: “来” is read らい here.)
しかし
最適さいてき
ある
いうゆー
わけ
なかっ
However, it was not to say that it was optimal.
べつ
具合ぐあい
悪いわるい
いうゆー
わけ
ない
It’s not that I’m particularly feeling unwell.