What Is This Thumping Heart?.Yomogi lately finds it difficult to focus on his tasks, and Inamoto surmises that he has a crush on Yume and encourages him to ask her out on a date. Yume meets with Kanae but does not learn much from her, but is pointed towards another classmate, Urita, who should have video recordings of Kano's performances. Later, one of the Kaiju Eugenicists, Sizumu, joins Yomogi and Yume's class under the guise of a transfer student, but appears friendly. He tells Yomogi and Yume that the Kaiju Eugenicists do not actually create the kaiju. Instead, the kaiju are born from a human's desire to be free from some burden, and the Kaiju Eugenicists take control of them in order to build a world where kaiju are needed...