Items in this area:
Sense materia
Turbo Ether
Zinc Battery x3
Cloud, Tifa, and Barett all come to in the playground at the Mako
Slums. After Barett yells for Marin, Wedge, and his other friends, he
and Tifa join you in the next area. Go back up to get a sparkling yellow
Materia (Sense), before returning to Wall Market. The man in the pottery
store will now sell you Materia, and if you go back to the parlor,
you have the option of freeing one of Don Corneo's men from the torture
chamber. Even if you got the Card the first time around, you can no
longer enter the brothel, BTW.
When you're done, leave and go south from the playground. Return to the
Area 5 Town and go to Aeris' house. Talk to Elmyra, her mother. You
can spend the night in the upstairs bedroom once the intermission ends.
Also if you did not take the 5 gil from the boy earlier, he will give you
a turbo ether. Return to Wall Market and go to the 'Machine & Gun' store
and talk to the man at the left end of the store; he'll sell you 3 Zinc
Batteries for 300 gil. You'll need them to activate the boxes in the next
area. Now go to the dead-end area near the parlor. (you'll see a bunch of
kids run in there). Climb up the pipe, and you'll find yourself high above
the town.