YOU SAID:

I just noticed that Gura was in the collab and I'm surprised of her English pronunciation

INTO JAPANESE

グラがコラボに参加していることに気づき、彼女の英語の発音に驚いています

BACK INTO ENGLISH

I was surprised at her English pronunciation when I noticed that Gra was participating in the collaboration.

INTO JAPANESE

グラがコラボレーションに参加していることに気づいたとき、彼女の英語の発音に驚いた。

BACK INTO ENGLISH

I was surprised at her English pronunciation when I noticed that Gra was participating in the collaboration.