lol the possibility of Rin being Tobi is more lesser than Obito being Tobi but i assume Rin can be Tobi just for the hints like
- Tobi knows Gai and Kakashi well
- Tobi does not use amaterasu/tsukuyomi/susano but rather he uses his sharingan thesame way a non-uchiha blood person like Kakashi does, Kakashi and Tobi only uses Space warping/manipulation jutsus, so Tobi might not be an Uchiha
but like i said on the other thread that Kakashi/Rin/Obito are still kids when the 4th hokage fight against Tobi so another possibility is that Tobi is i do not know, Tobi is really
NoOne that do not have a backstory yet