The King's Test.
Arthur finds himself in hostile territory after escorting Tessia home to the kingdom of elves.
Aired 30/04/2025EP 5 - The King's Test.

2025
The Beginning After the End
After a mysterious death, King Grey is reborn as Arthur Leywin on the magical continent of Dicathen. Although he enters his second life as a baby, his previous wisdom remains. He begins to master magic and forge his own path as the years go by, seeking to correct the mistakes of his past life.
(Source: Crunchyroll)