An invitation from the Dojuku Gakuen student formed "investment club" enrages Zaizen. Meanwhile, Investor P is advancing corporate research by making strategic use of "the quiz everyone knows," and "marriage hunting" and it was decided they would meet President of ZOZOTOWN Maezawa. What is the method of running a rapidly growing company!? And, what is the true meaning of "diligently then WHAM" saying that the 140 year recorded history of the Dojoku Gakuen investment club mentions!? The trick of investment is the fully loaded Volume13!!