ボイーヌ

Big Breast Tribe's Breast Deity
Its revealed that the whole reason for the war is due to a fight between Boweene and Petan over Boweene eating Petan pudding while Petan ate Boweene cake staring the the war but known to everyone Boweene and Petan madeup but due to there energy they used they went to slept for a thousand years and so the war Between the big and small tribes continue on. Only Haruto,Milphalia,and Iris know the truth and so they send Haruto and Milphalia to stop the war. They make Milphalia, Haruto "personal boob" 

From MangaGamer