から ずっと

ever since; continuously from a particular point in time

→ から
phrase Rare #36,178
ever since; continuously from a particular point in time Used after a starting point to indicate that a state or action has continued from then until now or another reference point.
JA: あなたが来てから ずっとこちらを見ています。
EN: I’ve been looking this way ever since you arrived.

俺が消えてからずっと後のことだ

It was long after I was gone.

— ブレードランナー 2049 (2017)

あの男はあなたが来てからずっとこちらを見てますよ

That man has been looking over here ever since you arrived.

— ロード・オブ・ザ・リング (2001)

あれからずっと何を?

What have you been doing ever since then?

— 海の上のピアニスト (1998)

家を出てからずっとだぜ

Ever since I left home.

— グッドフェローズ (1990)

“あなたの戦死の知らせからずっと後です”

It was long after the news of your death in battle.

— マレーナ (2000)