YG releases first records the same way western artists go about with their album cycles. So, yes, from the beginning there was no boy era, ily era, mmm era, nor my treasure era.

It's all one big THE FIRST STEP era.

@treasure #THEFIRSTSTEP_TREASUREEFFECT

The First Step is the album and Boy, ILY, and MMM are the singles used to build up hype for the full album.

So in this case, BOY is the lead single and My Treasure is the fourth single from THE FIRST STEP.

YG debut album cycles/eras are really hard

Treasure Effect has 10 tracks and 2 bonus CD exclusive remixes.

6 of those tracks were released as droplets.
I consider Going Crazy a bonus track.
3 new tracks are released together with the whole album.
The album has four singles: BOY, ILY, MMM, and My Treasure.