Eirth lives under the shadow of his father, the hero who vanquished the Great Demon King. In A Breakthrough Brought by Forbidden Master and Disciple, he discovers that same enemy's ghost and begins a secret tutelage to surpass his lineage.

Tired of being compared to his parents, Eirth accepts training from his father’s former rival to forge a unique path. This forbidden partnership grants the young noble access to devastating techniques and ancient wisdom that current geniuses cannot fathom.

As Eirth’s strength grows, he prepares to challenge the established order and prove his worth to the elite heroes of the past. The unlikely bond between the hero's heir and his greatest enemy sets the stage for an unprecedented revolution.

Eirth, the hero's son, trains with the ghost of the Demon King in A Breakthrough Brought by Forbidden Master and Disciple.

A Breakthrough Brought by Forbidden Master and Disciple, Kindan no Shishou to Deshi no Breakthrough, Eirth, Great Demon King, Hero's Son, Master-Disciple Relationship, Magic Training, Fantasy Adventure, Demon King Ghost, Read A Breakthrough Brought by Forbidden Master and Disciple manga