[Crossover] The Heart of Izumi Minato

To make his older brother willingly accept his eyes, Izuna staged his own death on the battlefield at the hands of the white-haired guy from the neighboring family. After successfully transplanting his eyes into his brother's, Izuna died with a smile. But when he woke up, Izuna found that his entire worldview seemed to have been refreshed. Why hadn't he gone to the Pure Land after death, but instead ended up in a place called Soul Society? Why were the Shinigami here not one person, but a whole group, divided into ranks and classes? Why was there a Hell outside Soul Society? Why did he have to go to Hell as a goodwill ambassador to exchange cultures? Why, after Soul Society and Hell, was there also a Heaven? Why did Hozuki, King Enma's chief aide in Hell, look exactly like Byakko, the divine beast from the Heavenly Peach Blossom Land? Why... Well, he had given up commenting on Hozuki and Byakko's love-hate relationship. Apart from occasionally getting caught in the crossfire, it really had nothing to do with him. But why hadn't his brother come down, even after Izuna had waited so long in Hell and Soul Society? What on earth was going on with this world? Once work finally let up, Izuna went to the World of the Living and was horrified to discover: Why were there no ninja in this world? Why did this world have spirit mediums? What was this spirit medium tournament held once every five hundred years? Why had he never heard of it? And what in the world was a Great Spirit? Why was everyone fighting to become Spirit King? Didn't they know Takamagahara was already overflowing with gods? Why was a Holy Grail War held every sixty years in this world? What was so great about that corrupted cup? How could an omnipotent wish-granting machine possibly exist? Exhausted and no longer willing to comment on this world, Izuna remarked, "People in the World of the Living sure know how to have fun. As a Shinigami, I really can't keep up with the times." But before one thing could settle, another arose. The spirit medium tournament hadn't ended, the Holy Grail War was still brewing, and Soul Society had gotten itself into serious trouble. Watching Aizen and the other two ascend to Heaven, Izuna nearly reached out to stop them. Huh? You mean Madara and Tobirama? They'll show up eventually, anyway, but I don't know when [shrugs].