Ep. 4: Masamune and Elf Yamada grow closer, prompting Sagiri's suspicion despite his denial.
Aired on April 30, 2017

Masamune observes the younger and more popular author Elf Yamada working on her novel, which brings the two slightly closer together. Sagiri notices this shift in their dynamic and becomes suspicious of their relationship. This suspicion persists even though Masamune explicitly states that he and Yamada-san do not get along at all. The pair engages in an argument regarding this matter. Following this conflict, Masamune shifts his focus and begins working on his ultimate light novel.
Episodes
- Ep. 1 · High school student and light novel author Masamune Izumi discovers the identity of his erotic illustrator.
- Ep. 2 · Class Rep Visits Izumi Home to Fetch Sagiri, Masamune Meets Fairy
- Ep. 3 · Sagiri hears piano music from the cursed Izumi House mansion next door
- Ep. 4 · Masamune and Elf Yamada grow closer, prompting Sagiri's suspicion despite his denial.
- Ep. 5 · Sagiri and Masamune work on a manuscript proposal while Elf sends an urgent message.
- Ep. 6 · Masamune Izumi and the Nemesis of Ten Million Copies
- Ep. 7 · Masamune enters the Light-novel Tenkaichi Budoukai despite Senju Muramasa's hostile declaration.
- Ep. 8 · Sagiri learns the truth about Masamune and Muramasa while the editorial office prepares for a summer celebration.