As long as I remember he was the god of souls, also known as the god of honest liars. He is from a different world Kotetsu
Sorry, made a mistake, not from another world, the Rhinel temple raised the descendants of the royal family but the royal emperor destroyed the temple and religion which was around 500 years ago-chapter 29, 30. The temple was shown in chapter 26 first.
Wait who is Lionel again