The Rising of the Shield Hero - Season 1 - Eps 4: Lullaby at Dawn
The Wave is gone, but Naofumi's relief is short-lived as Motoyasu challenges him to a duel in the middle of the celebratory banquet held in Melromarc Castle. Motoyasu insists that owning a slave is unbecoming for a hero and that Naofumi free Raphtalia at once.
About The Rising of the Shield Hero

Title: The Rising of the Shield Hero
First Air Date: 2019-01-09
Last Air Date: 2023-12-22
Status: Returning Series
Rating: 8.533/10 (from 1383 votes)
Language: JA
Seasons: 5
Total Episodes: 51
Network: AT-X
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy, Drama
Production Companies: Kinema Citrus, Good Smile Company, Nippon Columbia, Glovision, NTT Plala, Frontier Works, Sammy, DR Movie, KADOKAWA Media House, Crunchyroll, NTT Docomo
Synopsis
Iwatani Naofumi, a run-of-the-mill otaku, finds a book in the library that summons him to another world. He is tasked with joining the sword, spear, and bow as one of the Four Cardinal Heroes and fighting the Waves of Catastrophe as the Shield Hero. Excited by the prospect of a grand adventure, Naofumi sets off with his party. However, merely a few days later, he is betrayed and loses all his money, dignity, and respect. Unable to trust anyone anymore, he employs a slave named Raphtalia and takes on the Waves and the world. But will he really find a way to overturn this desperate situation?
Cast

Kaito Ishikawa
Naofumi Iwatani (voice)

Asami Seto
Raphtalia (voice)

Rina Hidaka
Filo (voice)