Rampardos said: Well, yeah, I wasn't saying they'd mean anything similar, but it would still be a phonetic pun.
Oh, in that case, probably.
Bear book
A pun.
This doujinshi was sold at a doujin convention held at Kumamoto Prefecture.
熊本 (Kuma-Hon) = Bear book.
熊本 (Kumamoto) = Kumamoto Prefecture.