Kaoru Kaidoh from Prince of Tennis...He loses his memory temporarily after he hits his head hard on the floor, saving his underclassman from an incoming Tennis ball.
She was once a powerful espada........her Rank among Espada's were no:3..........due to jealousy...Noitora hit nel with a heavy blow through cheating........after that she Lost all her memory......and and because of her amnesia she was transformed into a child........but if she remember who she was she can strasform back to her orginal self for a few mins but after that she looses her memory again and turn back to a child......heh he eh ehe