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: As of mid-2025, the series has reached at least 15 volumes . Where to Read/Buy : Digital versions are available through Amazon JP .

: Karuna helps Cecilia defeat rival demon kings, eventually leading to her becoming the "True Demon King". : As of mid-2025, the series has reached at least 15 volumes

: Karuna eventually faces off against former comrades, including the previous Hero, Heracles, in a showdown at a "Hot Spring Labyrinth" created by Karuna himself. Publication Details Original Creator : Ghost Mikawa. : As of mid-2025