Board Thread:Game Updates/@comment-24980562-20151025022704/@comment-749631-20151030152458

what I understand is that, "DMM own the game, KDKW run it for whatever profit sharing agreement it have with DMM (maybe fixed payment or maybe other factors included and this is not important), on KDKW's own system via DMM's gateway".

The Japanese Wikipedia entry define "partnership" in Japanese law as a type of company formed by multiple people. Since There are no new company formed for kancolle, I doubt was he using this legal definition in that context (despite the theme back in that meeting were financial), and from https://kotobank.jp/word/パートナーシップ-115437 if it is not the legal definition on company type then it would be same as daily English usage.