plain sailing

broadly not-comparable

(by extension) simple, straightforward, or easy

Japanese Meaning

単純で容易な状況、または順調に進む状態を示す / 困難や複雑さがなく、スムーズに物事が運ぶ様子

After we fixed the initial bugs, the rest of the deployment was plain sailing.

最初の不具合を修正した後は、残りのデプロイ作業は簡単でした。

Sense（1）

(by extension) simple, straightforward, or easy

He's a straightforward, plain-sailing fellow.