To be honest if you look in SF9's album notes, the songs that have Original Title in their credits were in English first.

Fanfare was originally Seek Me
K.O was Caesar and Cleopatra
Together's title stayed the same
4 Step stayed the same
Jungle Game was Jungle Thing (cont)

Easy Love was Locked
Hide and Seek was Boy in Luv (yes this was the original title)
Fall Down was Caught Up
Let's Hang Out was Play
Blank was I Promise
Scold was The Wave
Just on my Way was A.D.I.D.A.S. (No kidding)
Be My Baby title stayed the same
Midnight Road was X-Division

Now or Never was actually originally Jealous
Shadow stayed the same
Enough was Superia
Heartbeat stayed the same
Beat Goes On stayed the same

In case you don't know where this came from, it's in the album notes.

You can hear the original K.O demo in this video when it had Caesar and Cleopatra in the chorus

I put Enough was originally Superia, but I think it's a misspelling of Superior Inseong sings this word during the English chorus.