This is technique allows Haru to store his swords in a pocket dimension. Haru is able to summon these swords to his hand easily and instantaneously. According to rumors, Haru has around 600 swords in that dimension.
Trivia[]
This is based off of Requip magic in the anime/manga, Fairy Tail.
This technique is one of the many reasons why Haru is called "Futsunushi."