Long ago, beyond the woods, through the forests and the pass, in the deep mountains of Japan, there lived 'Aka-Oni'; a red Ogre, and 'Ao-Oni', a blue Ogre. The red Ogre liked human children very much and he was always thinking about how he could make friends with them everyday.
The Red Ogre wanted to become friends with children in a village nearby. So, the Red Ogre invited the children to come to his house to play.
But no one showed up, and the red ogre grew puzzled, sad, and angry. "I'm such a kind ogre - why would nobody visit me?"
Moved by his friend's feelings, the Blue Ogre said, "Look, I have a plan."
The Blue Ogre's plan was for him to pretend to terrorize children and then have the red ogre chase him off, "rescuing" them from him. The plan went without a hitch, and the red ogre became the most popular creature among the children, and all came to play with him.
After a happy day of enjoying the children's company, the Red Ogre found a letter from the Blue Ogre. The letter said, "My Dear Red Ogre, if people find out that you are a friend of the Bad Blue Ogre's, they will not let the children come to you any more. So, I'm leaving. Please live happily with the children. Goodbye. Blue Ogre."
The Red Ogre cried out, "Blue Ogre is gone! A dear friend of mine! He is gone!" And he wept.
The Red Ogre and the Blue Ogre were never to see each other again.
Obviously a reverse of this would be the Red Ogre leaving the children to be with his friend the Blue Ogre so that's what I think people are guessing could happen here