Risa Niigaki to graduate from Morning Musume and Hello Project

It was announced at the Hello Project Winter Concert 2012 that Morning Musume leader Risa Niigaki is going to graduate at the end of the Morning Musume Spring Tour. What I think of this is that it's really sudden. Also I really thought Risa would stay for at least another year. Risa is my favorite member but it didn't leave me speechless when I heard that she's graduating. To be honest, I'm used to members graduating even if it is really sudden. I really want to know more about this but for now, what I know is that theres rumors that she was going to graduate with Ai Takahashi but cause of the new members coming it was postponed. I looked up the news on a website and I read the reason she wants to graduate is because she wants to become a actress and stuff. I know Risa has been a member for 10 years but again, as leader, I thought she would stay for a lot longer. What I find interesting is Sayumi Michishige will be the new leader while Saki Shimizu of Berryz Koubou will be the leader of Hello Project. I'm not sure if Sayu will be a good leader or not but who knows? I find it interesting that Saki will be leader of Hello Project instead of Sayu. I guess Tsunku-san thought Morning Musume is just enough for Sayu to handle. Anyways, I hope Risa will be happy and have a great career whatever it might be! ^-^ Also I hope Sayu will be a great leader despite her singing skills and stuff lol.