User blog comment:B214/General Discussion/@comment-185.112.105.215-20161028164724/@comment-27083298-20161028173449

Those two are aiming to fight each other and they're gathering forces to join them. Indra has Cao Cao and Sun Wukong, while Shiva has Mahabali and the Asuras and wants Issei to join him. So other characters would want to face them.