Eromanga Sensei Season 1 Episode 4 Eromanga Sensei ( Air Date 2017-04-30 ) Genre Animation, Comedy, Drama category. Overview "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”!".