During the Heian Era, Abe no Seimei was a close childhood friend of a noble named Masayuki, and his wife, Mune. While he was away from the palace, Masayuki often asked Seimei to stay by his wife's side, guarding her and keeping her company. However, during the time they spent together, Mune and Seimei fell in love and became increasingly romantically involved. Unbeknownst to them, Masayuki soon learned of the affair, and became overcome with grief and jealousy. One day while Seimei was on a trip to Kyoto, Masayuki snapped, murdered Mune and committed suicide. Guided by a premonition, Seimei rushed back to his hometown only to find that he was too late. Overcome with guilt, he decided to perform a forbidden Onmyō ritual that would allow him to resurrect the dead by transferring himself into a completely different world where they were still alive. In doing so, Seimei soon found himself as "Mr. Abe" in mid-20th-century Osaka, where Mune Imamiya and Masayuki Asahina were pre-existing residents of this alternate world. Now, Masayuki was an ambitious, but largely unsuccessful young man who had enlisted Mr. Abe's permission to build the Abenobashi Shopping Arcade. He was also madly in love with Mune (夢音), a local girl whom he tried to woo (with little success) at every possible occasion. It was not long, however, before Mune fell in love with Abe, constantly pursuing him and offering him a home-made lunch. Abe tried for a time to resist her advances, but eventually he was no longer able to contain his feelings, and made love with Mune in his apartment. Unbeknownst to them, an instantly-jealous Masayuki accidentally discovered the truth. The next night he became staggeringly drunk and invited Abe to meet him at the Abeno Shrine, planning to murder him with a hidden butcher knife when he arrived. At first unsuspecting, Abe arrived on the scene, but once he saw the decrepitly drunk Masa he knew what was afoot. He promptly bid Masayuki farewell, then disappeared, going back to his job in the Heian Era, leaving a pregnant Mune behind him; her child is Sasshi's father.
Satoshi "Sasshi" ImamiyaA precocious, hyperactive, 12-year-old typical Osakan boy. He has a huge passion for collecting, Role-playing games, sci-fi, farting, dinosaurs, guns and visual novels. Sasshi's family used to run the local bathhouse, the Turtle Bath, but was forced to give it up and move out due to redevelopment plans for the Abenobashi Shopping Arcade area. Sasshi spends his lazy days hanging out with his best friend Arumi. While visiting each world, Sasshi is quick to learn the gimmick behind each one, and eventually begins playing by the world's "rules". It is strongly hinted he has feelings for Arumi, and is prevented them from going back due to the fact she will leave for Hokkaido.
Tomo Saeki (Japanese), Luci Christian (English)
Arumi AsahinaSasshi's best friend and classmate, having practically grown up together with him in the Abenobashi Shopping Arcade. A sensible and pragmatic girl who is a foil to Sasshi. Arumi's eccentric father and stubborn grandfather run a French restaurant in the Shopping Arcade known as the Grill Pelican. It appears, however, that the Asahina family will be closing up shop in the near future as part of redevelopment in the area and moving to Hokkaido, forcing Arumi to leave Sasshi behind. She expresses a strong distaste for every world that she and Sasshi visit.
