After being declared Demon Lord by the divine demon priestess Lulum, Seika heads to demon territory. The potential return of the Demon Lord after sixteen years prompts a council between the representatives of the seven demon races. However, with the pro-war and moderate factions clashing and each race pursuing its own agenda, the discussions quickly became deadlocked.

Disillusioned by the same political atmosphere he once loathed in his past life, Seika turns his attention to the young rulers who lack real power. As he spends time with them, memories of his time training his disciples begin to resurface.