Board Thread:New on Kancolle Wiki/@comment-1820055-20150302121253/@comment-25490263-20150303214446

Unless something has recently changed, English is a rule. As mentioned at the top, in the banner, in the Kancolle Wiki:Policy, & employed in numerous Special:Log/delete prior deletions.

If there's an exception for Japanese, save in wiki usage versus as a random comment where it is suspect, it has not be communicated anywhere.