Toshiya if the original translator/editor doesn't make a reference/note there is no chance a simple reader will make one later on. It's pointless and jarring to have a blank part. The best choice is to follow the format that zzhk and Entropy use. If someone makes a note later on then you just remove the comment . Check Unlimited Fafnir for reference.
Shinrei Tantei Yakumo
Hello, thanks for pointing out the issue with the dead links. I replied on the admin contact page too, but As you said, if someone gets Laute's permission, the archived versions could be hosted here (I don't personally know anything about contact via tumblr). What I did in the meantime was remove the external links and bring back some local wiki pages for the project. . --Cthaeh (talk) 02:54, 31 July 2017 (CEST)