第 4 集: 真政與山田艾爾芙關係漸進，儘管真政否認，沙織仍起疑心。
2017年4月30日 播出
After observing the younger and more popular author, Elf Yamada, work on her novel, Masamune and Elf become a little closer. Sagiri notices this, and gets suspicious of their relationship, despite Masamune saying that he and Yamada-san don't get along at all. Regardless of their argument over this matter, Masamune begins working on his "ultimate light novel"! (Source: Crunchyroll)