Campione! - Season 1 - Eps 1: The First Story
Kusanagi Godou is entrusted with a stone grimiore by his grandfather to deliver to its former owner, an old friend, in Italy where he encounters supernatural happenings. Meeting the beautiful knight, Erica Blandelli, he is drawn into the battle between rogue gods, and uses the power of the grimiore to defeat the Persian god of victory, Verethragna, gaining his powers, becoming a god slayer, also known as a Campione.
About Campione!

Title: Campione!
First Air Date: 2012-07-06
Last Air Date: 2012-09-28
Status: Ended
Rating: 8.1/10 (from 94 votes)
Language: JA
Seasons: 1
Total Episodes: 13
Network: AT-X
Genres: Animation, Comedy, Sci-Fi & Fantasy
Production Companies: diomedéa
Synopsis
Godo Kusanagi, a high school student that kills a god, claiming its power and title of Campione, to slay other gods.
Cast

Eri Kitamura
Liliana Kranjčar

Sachika Misawa
Arianna Hayama Arialdi

Rina Hidaka
Shizuka Kusanagi

Yuka Saitou
Ena Seishuin

Yui Ogura
Athena

Nobutoshi Canna
Perseus

Junko Minagawa
Verethragna

Takuya Eguchi
Salvatore Doni

Yuiko Tatsumi
Pandora

Yoko Hikasa
Erica Blandelli