Refresh for each green chest and take appropriate reward:

If Enemy shows up, he takes away:

If Rival shows up, he takes away:

If They both show up, use Rival!

If the Prize is TT4:

Green Chest: tt-0402, 05 gil, 18 EXP

If the Prize is TT5:

Green Chest: tt-0511, 05 gil, 37 EXP

If the Prize is TT6:

Green Chest: tt-0602, 10 gil, 18 EXP

If the Prize is TT7:

Green Chest: tt-0708, 10 gil, 20 EXP

If the Prize is 3 Materia:

Green Chest: green, green, blue, 10 gil, 30 EXP

If the Prize is 1 AB Letter:

Green Chest: letter10, 05 gil, 29 EXP