Betrayed by a Hero in the Dungeon, the Sword Saint Encounters an Elf Girl Deep Underground—While Being Lavished With Love by an Elf Who’s Turned Yandere, He Exacts His Revenge on the Hero in a Big, Flashy “Serves You Right” Fashion

Native title: ダンジョンで勇者に裏切られた剣聖は、地の底でエルフの少女と出会う～ヤンデレと化したエルフに溺愛されながら、勇者への復讐をやり遂げてド派手に「ざまぁ」します～