Kuni ni Saikyou no Barrier wo Hattara Heiwa ni Narisugite Tsuihousaremashita. Ore no Mahou ga Yabasugite, Bijo to Mazoku ni Kakomarerun da ga!?

国に最強のバリアを張ったら平和になりすぎて追放されました。～俺の魔法がヤバすぎて、美女と魔族に囲まれてるんだが!?～

When I Put Up the Strongest Barrier in the Country, It Became Too Peaceful and I Was Banished. They Did Know That That Barrier Isn't Permanent, Right?