HAMETSU FLAG KAIHI NO TAME YAMAOKU HE HIKI KOMOTTEITA SAIKYOU NO AKUYAKU WA, TASUKETA HEROINE NI YOTTE OMOTE BUTAI HE TATASARERU; The Strongest Villain Who Hid in the Mountains to Avoid Doom Flags Is Brought to the Spotlight by the Heroine They Saved