Currently Hei's reality has merged with the following people's:
- Milo--Hei got Antimilos and Scorpio Temple in place of the National Museum of Western Art in Tokyo. And Milo got subways. Milo has been dropped, but the merge still applies.
- Mu--because they're totally BFF. Yasukuni Shrine in Tokyo is now Aries Temple and Mu has quite a few sakura trees in front of his temple now. Some of the shrines have switched to Japanese or Greek, depending. The merger has since expanded; Hei now has Jamir just outside of Sapporo, as well as all the temples in their respective positions. Mu gets more Contractors, Odori Park and 00's technology.
- Diva--they have a complicated, but very close relationship. Hei got the Statue of Liberty and a bunch of Americans. Diva got some Japanese signs.
- Dino--mafia bosses and assassins make good friends. So they exchanged their favorite eatery places--Dino got a ramen shop, Hei got a nice little café.
- Ryotarou, Yuuto (d2), and Deneb--the motley trio already had a full merge, so Hei gets three for the price of one. Basically they now have a shared point around the Milk Dipper. Hei can access it from his own reality.
- Misaki--because they're on-again off-again lovers. &hearts! There's construction where there shouldn't be construction, sometimes the wall around the Gate has a hole in it and sometimes it doesn't, and some of the dates are wrong.
- Ikki, Agito/Akito--another complete merge between the other two, so two for the price of one here. Hei has an AT team all to himself, and a bunch of random people on ATs. and the National Astronomical Observatory for Japan is now a shared point. Ikki got Contractors.
- Angela--Hei has been friends with Angela for quite some time, and they've been there for each other through some really awful times. Now Hei gets some monsters from Angela's world, and Angela gets some Dolls.
- Crowley--they have a very complex relationship. Half of the time they hate each other and are either want to, or are in the process of, beating the shit out of each other. The other half of the time, they're getting along, usually for the sake of Henrietta, although there is a small, begrudging sort of respect there as well. Crowley gets Hell's Gate and Sapporo weather; Hei gets Knightsbridge in London, which also includes access to Crowley's flat.
- Chris--like Crowley, Hei and Chris connect through Henrietta. They have a tentative sort of friendship, since the first time Hei met him he thought Chris was a Contractor, and Hei reminds Chris of his father. Still, they get along and have been through some pretty bad times together. Hei gets Fenton Works and any ghosts that come out of it, and Chris gets Contractors and some Sapporo weather.
- Juni--Hei and Juni are pretty good friends, and they talk relatively often. They've also helped each other out of tight spots before, and Hei in particular has a habit of feeding and patching up Juni. Hei gets some webby streets and hallways, while Juni gets bits of Tokyo, mostly streets and signs.