#7 My Younger Sister and the Most Compelling Novel of All Time
Masamune, in a hurry to publish his new work, immediately agrees to enter the "Light-novel Tenkaichi Budoukai" competition as suggested by Kagurazaka, his editor. However, they run into the super-popular author, Muramasa Senju, who also intends to enter the competition and stand before Masamune. As the girl mocks Masamune and Sagiri's dream as a "lame dream”, Masmune proposes a bet. As Masamune works on revising his work with Elf's support, an unexpected visitor comes by... It was none other than Muramasa Senju--.