u/Hungry-North-584

1.First clue is shown in chapter 99 when Nami talked about a sudden change in weather .

2.Which is why Dragon summoned a lightning bolt to save Luffy.

3.Cause a rain that prevented the Going Merry from getting burned .

4.The anime even added that scene of aura farming while lightning is blasting Buggy.

Ichika =forest god(green)

Nika =sun god(red)

Sanka=rain god(blue)

Yonka =earth god(brown)

Goka or Yonka 2=?????(moon god or serpernt of hell ,probably Loki true fruit name)