Class Teni Shita kedo Seikaku ga Kuzu Sugite Tsuihou Saremashita: Anti Yuusha wa Shougou “Shinryakusha” to Skill “Ana” de Chika kara Isekai wo Honhou Suru

A student named Bandou Chataro and his class are transported to another world. Princess Emilia asks for help, offering the title of hero to those with a mark on their right palm. Most students are thrilled to have such marks, but Bandou has none. Upon checking his status, he discovers a different title and skill: "Invader" and "Hole." His skill allows him to invade from underground. Since he is not recognized as a hero, he decides to avoid detection and instead works to undermine the country from below.