YOU SAID:

Colin goes to fetch breakfast for Serge because Serge cannot leave

INTO JAPANESE

セルジュは出られないので、コリンはセルジュの朝食を取りに行く

BACK INTO ENGLISH

Serge cannot get out, so Colin goes to get Serge's breakfast

INTO JAPANESE

セルジュは出られないので、コリンはセルジュの朝食を取りに行きます

BACK INTO ENGLISH

Serge cannot get out, so Colin goes to get Serge's breakfast