Ryuuenza

The Conwell otherwise known as the Infinity Sword is a weapo that handed down to the next leader of the Mikigami family. Elissa Mikigami refused the birth right of wielding this weapon and abandoned her family, leaving her younger brother Ike Mikigami to inherit it.

The Conwell is said to have the power to create a link to a realm that possess Infinite Swords.