I've never owned JSS so I'm not sure how the koma system worked in that one. In JUS, it's pretty easy to tell which komas are from which manga series. The system is set up so that you can choose which manga series you want to put in the koma panel and it'll display the komas that you unlocked so far in that particular series.
As for the link to the translation walkthrough, I use Genroh's walkthrough at gamefaqs: http://db.gamefaqs.com/portable/ds/file/jump_ultimate_stars.txt
As for the link to the translation walkthrough, I use Genroh's walkthrough at gamefaqs: http://db.gamefaqs.com/portable/ds/file/jump_ultimate_stars.txt