Manga Confusion

I'm noting my thoughts here when there's a manga confusion that someone else might want to look over.

The first notes are for Zakk's Canis works. What I think is happening:

• The books, from magazine serialization, are released first in Japanese (for example? though Edge Comix).

• KUMA is publishing English-language editions.

• The series order of the books to date are Dear Mr. Rain (Vol. 1), Dear Hatter #1 (Vol. 2), and Dear Hatter #2 (Vol. 3), The Speaker (the latest, a spin-off story).

• The Speaker (not yet released in English) is listed in online bookstores with a "3" in the title. There might be variant covers, each showing a different mafia character.

Some of the editions currently in LibraryThing:

Canis: Dear Hatter, Volume 1/Zakk/ISBN 1634423372/Manual Entry
CANIS -Dear Hatter- (1)/Zakk/ISBN 4863495129
Other — Canis: Dear Hatter #1 (CANIS, #2)/ISBN 8365856018
CANIS -Dear Hatter- (1)/Zakk/ISBN 4863495218
CANIS-Dear Hatter-#1 (EDGE COMIX)/Zakk/ISBN 4863495129
Canis: Dear Hatter, Volume 2/Zakk/ISBN 1634423356/Manual Entry
CANIS -Dear Hatter- (2)/Zakk/ISBN 4863495218
CANIS-Dear Hatter-#2 (EDGE COMIX)/Zakk/ISBN 4863495218

I'm especially taking a hard look at the editions labeled as #2.