I thought only the Japanese did that.
The sucide rate in ROK is one of the highest in the world. Japan is pretty high as well but nowhere as high as ROK. The most famous political sucide in ROK is Prez Roh Moo-hyun who served as Prez 2003-2008 but was convinced of corruption after he stepped down. He commited suicide in 2009.
We on ROC always refer to this example when we speak of our own ex-Prez Chen who was also convinced of corruption after he stepped down in 2008. Chen has never repented and continued to claim that his charges are trumped up and constantly trying to get involved in the political process to try to get a Prez parden while he is out on medical parole which itself is questional in terms of justification.