Saint Seiya: The Lost Canvas

2009 Animation
82%

An orphan known as Tenma becomes one of Athena's 88 warriors known as Saints and finds himself in a war fighting against his best friend Alone who is revealed to be the reincarnation of Athena's biggest enemy, the God Hades.

First Season: Season 1 (2009)

https://images.entertainment.ie/media/season/5jzYyNHbv0hxktAr0Xj1GAjHmOx.jpg

Alone invokes Hades by painting a colossal picture that will destroy the world, but Tenma trains as a warrior-saint of Athena to oppose him.