Three missing translations

Omotecho, if you get this message soon, could you please look at these three messages?

• https://translatewiki.net/wiki/Special:Translations?message=discussiontools-newtopic-legacy-hint&namespace=8
• https://translatewiki.net/wiki/Special:Translations?message=discussiontools-newtopic-legacy-hint-return&namespace=8
• https://translatewiki.net/wiki/Special:Translations?message=discussiontools-newtopic-legacy-hint-close&namespace=8

I would like them to be translated into Japanese.