Chapter 5

Promise is the fifth chapter of the Seinen manga Eiyū Kyōshitsu.

Short Summary
After defeating the Library Guards and finding valuable information, Blade storms to the class and calls Arnest out. Arnest takes him to her room and tells him about her past, and the demon sword Asmodeus. Blade then takes her to the Royal Library of Banned Literature and creates magic circles on the ground to begin the rituals. Arnest calls out Asmodeus and is dragged inside his world where she prepares to fight the demon.

Characters
Characters in italic have appeared without a significant contribution to the plot.

Trivia

 * This is the first chapter Asmodeus is seen in his true form.
 * This is also the first chapter to include explicit nudity.

Chapter notes

 * Arnest shows strong moral.
 * Blade reveals that he has no hesitation in killing Arnest.
 * The Library Guards were defeated.
 * Asmodeus makes a debut in his true form.