After an embarrassing high school class reunion with their successful classmates, who have "proper" jobs, relationships, and even children, the Matsuno sextuplets return home to sulk about their status as NEETs. They spend the night drinking away their sorrows, eventually falling unconscious, until they awaken in a strange world of memories, centered around one of the brothers' biggest high school regret.

As the sextuplets navigate this memory world, they encounter their embarrassing past selves from high school, as well as those of their friends. All the while, they try to uncover whose regret was great enough to trap them in this strange world, so that they can make their way back to reality. However, they're running out of time; this world of memories is unstable, and the sextuplets may lose their chance to make things right if they're too slow....

It all starts when Gokudou steals a pouch from a fortuneteller, thinking that it contains a gem. Instead, it turns out to be a rock, from which emerges Djinn. The genie grants Gokudou the standard three wishes, but our anti-hero doesn't think heavily about his wishes. Gokudou does get his wishes, though not exactly in the fashion that he expected. The best thing he gets out of his wishes is Honou no Maken, a magical sword that enables its owner to do fire attacks and it can be summoned from anywhere in the world. Even with an enchanted sword, Gokudou doesn't get much respect. He gets turned into a woman by Djinn, who is also a shapeshifter. He is followed by Rubette La Late, a potential love interest who is more interested in adventure, karaoke and outperforming Gokudou. He gets whapped on the head a lot, especially by the fortuneteller who reappears throughout the series just to plague Gokudou it seems. Later in the series, he gets another sidekick, a former evil magician named Prince, who is more handsome and a better womanizer than Gokudou. (Source: AnimeNfo)

Miura Kyoji, a dedicated kendo student, discovers that his shisho (master) Tate Masanari is a reincarnated Incan warrior named Yawaru who wishes to destroy the world to purify it. Kyoji himself is the warrior Bilka, who foiled Yawaru's plans in their previous lives. Yawaru gathers other awakened spirits to release the powers of nature. Now Kyoji must wrestle with his own fate and decide if he is merely a vessel for the reincarnated soul or if he is truly Miura Kyoji and which will be better able to save the world and the future as he knows it.