For generations, the blue-blooded Homonji family has been devoted to a pure and rigorous pursuit of knowledge in all forms, regardless of the powers that be or the fortunes of the aristocracy with whom they sympathize. But now, inheriting the pedagogic mantel of the family as its 89th master is Homonji Sharaku, a super genius with an IQ of 246, and a man with time on his hands. "Ah, I'm so bored. Isn't there a puzzle I can solve?" Sharaku goes in search of "worthwhile" mysteries to crack, putting his super genetic brain to the test.