Shimohigure is the Zanpakutō and Shadow Blade of Takeshi Tetsuo.
Originally, Shimohigure was two blades, Higuresama and Aisusama. Both swords were blasted in half during a battle. After writing appeared on both blades, Takeshi but the broken edges of each sword together, and without realizing it a manifestation of his soul, creating Shimohigure. His soul's manifestation caused the blade to be a shadow blade and a Zanpakutō.
- Hishoto: This ability allows Takeshi to shoot blasts of ice energy that freezes on contact, simply by swinging his sword.
- Hakumeirei: This ability allows Takeshi to stab an opponent and then view the foe's thoughts.
- Hakumei Soshite Hinankan: This ability creates a partially visible shield of twilight around Takeshi and anyone he chooses. It absorbs any attack, and freezes the opponent if it was a melee attack. The amount of energy used is based on the strength of the attack.
The release command is, "Freeze the Twilight, Shimohigure."