No alternate forms or cameos. No young/old/shiny/parallel/genderswapped/upside-down/whatever-you-have of a character. Using a video game example to illustrate my point, wolf!Link, young!Link, OoT!link, Picori!Link, and whatever else you can think of, are all the ONE CLAIM: Link. To be clear on this point: no separate arcs claim. Naruto from Naruto and Naruto from Shippuuden are the EXACT SAME CLAIM. However, Sakura Kinomoto from Cardcaptor Sakura and Princess Sakura from Tsubasa: RESERVoir CHRONiCLE are separate characters, as CLAMP have stated they are entirely different characters. If CCS!Sakura makes a cameo appearance in TRC, she can't be claimed as part of TRC.