I would certainly appreciate assistance, but you already seem to have a lot on your plate. I do curtail troll/spams as often as I can, fortunately there aren't that many. If you're serious about being a co-admin I will consider your request after about 60 reasonable contributions to the wiki.
I haven't added other characters pages yet since the manga just started thus I wasn't sure if the characters so far are worth having their own page (such as Tenko, Sayoko, Nanoka's grandfather and Uozomi). I will however soon add a page about the Spider woman from chapters 3 to 5.
Thanks. As for the chapters, I won't be able to write everything that happens in every chapter, and I think we should do short summary of each chapter in each volume like I did in Rinne wikia, in order to arouse curiosity to those who visit the wikia and prompt them to read it. Besides, I don't see the point of explaining a whole chapter when you can read the chapter online.