🇯🇵 Japanese language book only Translated description: I, Shibuya Yuuri, was swept away by the True Demon Kingdom and was unable to return to my original world. Surrounded by beautiful subordinates, I was working hard at my unfamiliar demon king duties, and then the illegitimate child (secret child) incident broke out...!? The fourth installment of the series! Just before my 16th birthday, I, Shibuya Yuuri, was unable to return to my original world. Although it hurts a little to remember the faces of my family, I somehow continue my demon king duties surrounded by overprotective and excellent subordinates. However, my relatively peaceful days in the True Demon Kingdom were shattered by the appearance of a girl who calls herself "the illegitimate child of the Demon King." ...By the way, what is Gorakuin? Eh, a secret child? Who's? - Huh? Mine!? The fourth installment of the much talked about high-tension fantasy, Yake no Yanpachi.

ISBN: 9784044452049