During Kiyotaka's early life, his grandfather, Toranosuke Ishimaru, was once Prime Minister of Japan; a title Kiyotaka believed he gained through his own natural genius rather than any hard work.

After only a few months in office, the public opinion of Toranosuke changed from high praise to widespread criticism due to a disastrous scandal, and he was forced to step down. After that, his business collapsed and the Ishimaru Family was left mistrusted and in huge debts which Kiyotaka has stated 