The OVA series allows for a deeper exploration of the characters and their motivations, particularly during the Hades arc, which is considered one of the more mature and complex storylines of the series.
OVA (Original Video Animation) series, you can find various collections that group these chapters together. The Hades saga is split into three main parts: Available Batch Collections Saint Seiya Ova Hades Batch
Navigating through the prisons of Hell while battling Specters and the 3 Judges of Hell. The OVA series allows for a deeper exploration