Light Novel Volume 12/Synopsis

Prologue: The Shield Hero's Morning
Naofumi started Hengen Muso training using different methods than the others. Due to the usage of Greed and Gluttony skills, Ren now suffers various handicaps and level drop. After looting from the dead body of an enemy from previous fight, S'yne uses its translation accessory to make her doll familiar speak in human language.

Chapter 1: Instant Awakening
As his unique way to train in Hengen Muso style, Naofumi spar with Atla due to her aptitude for the art. When Naofumi is exhausted, Raphtalia take turn to spar. Naofumi observes the fight as a way to sense life force. After the sparring session and had lunch, they went to visit the weapon shop guy at the castle town.

Chapter 2: The Alchemist
Naofumi orders a katana using materials that previously used to make a prototype shield. Tolly and the weapon shop guy remembered that their master is a swordsmith specialized in making katanas. Naofumi went back to the village after parting with them. Some of the residents informs Naofumi that some alchemist from Faubrey was looking for him. Seconds later, the said alchemist appears and inspects Filo. The alchemist introduces herself as Rat, stopped her conduct once Naofumi said he disapprove it. They then have a long discussion about monsters. After finding out about Rat's thoughts and philosophies, Naofumi decided to accept her in the village, on condition that she become his slave as an insurance of her honesty.