[Cut through adversity and defy the world with your sword!] Hollow is a boy who was born in a world where magic was at its peak, and under the heroic bloodline ‘Vermillia’. After birth, he was expected to hold immense magic reserves, but it turns out he was diagnosed with a condition called ‘Magic Oversensitivity’ which disabled his ability to use magic. Shortly after, Hollow’s disappointed father gave up on him and burnt a crest onto his hand labeling him as a useless human being… Right when all hope is lost, in Hollow’s search for what he could truly accomplish, he stumbled upon a dungeon. And within that dungeon, Hollow had found a sealed magic sword “Kasumi”, not knowing she would change his life. “I’ll become the strongest Swordsman in a magic-ruled world!” In exchange for magic, Hollow would slowly learn that he had instead gained the ability to cut through every conceivable form of magic?!

Tetsuya, a worn-out corporate slave working for a black company, lives each day with only his pet cat, Tama, as his emotional support. One day, he comes home to find that Tama has suddenly grown to an enormous size! Following Tama’s instructions, Tetsuya takes her to a nearby dungeon, where she effortlessly defeats the boss. She can move at incredible speed while carrying her owner and even purring seems to grant buff effects—has Tama awakened superpowers!? Before long, Tetsuya saves a popular streamer, goes viral online, and his dungeon-exploration streams become a massive hit. The world can’t stop talking about his adorable—and unbelievably powerful—pet cat!