|Kana||黒川正博 (Kurokawa Masahiro)|
|Role||Kingdom Guard Subsidiary No. 1|
Former 3rd Seat of Squad 9
Former Unseated Officer of Squad 13
|Home World||Soul Society|
|Family||Shinobu Eishima (twin brother)|
Masahiro Kurokawa is Number 1 of the Kingdom Guard's Subsidiary Division. He is the twin brother of Shinobu Eishima.
During their early years in Rukongai, he and Shinobu got separated. They were reunited upon their admittance into the Soul Reaper Academy, when they ended up in the same class, along with Ryou Fujimoto, who he quickly became friends with, forming a bond similar to Shunsui Kyōraku and Jūshirō Ukitake's. While Shinobu took up a position in Squad Nine, Masahiro became an unseated officer in Squad Thirteen, and became Captain Ukitake's protégé of sorts.
Soul Society arc
He, along with Ryou, provided cover for Jūshirō Ukitake, Kiyone Kotetsu and Sentarō Kotsubaki as the former brought the Shihōin Shield to Sōkyoku Hill and the time for Rukia Kuchiki's execution drew near.
Masahiro is the splitting image of his brother, aside from slightly lighter hair and a black stripe running around his head and down the back. He wears a similar overcoat worn by his brother, except with no gloves or writing on the back, save for the Guard's symbol in black, and a silver badge on his belt.
Like his brother, Masahiro is often calm and collected, but can be compassionate and understanding at times. He always treats those around him with respect, even those who are weaker or not as highly ranked as he is.
Powers and Abilities
Master Swordsmanship Specialist: Masahiro has great skill over the wielding of his Zanpakutō's Shikai, which can be awkward to wield at times.
Expert Hand-to-Hand Combatant
Immense Spiritual Power: Unlike the other members of the Subsidiary, Masahiro boasts Captain level spiritual energy.
Futagoza (双子座, Gemini): When sealed, it takes the form of a standard katana with a dark red hilt and a oval-shaped guard adorned with the Gemini symbol, akin to its name.
- Shikai: The release command is Intertwine (絡み合う, karamiau; Be Intertwined). When released, the hilt doubles in length and a second blade and guard manifest on the other side, curved in the opposite direction.
- Shikai Special Ability: Masahiro can split Futagoza into two separate swords. In turn, this makes Futagoza a dual bladed Zanpakutō. The swords have the greatest strength when they slash in tandem with each other. If their strokes are even half a second apart from each other, their strength is greatly diminished.
- Bankai: Bunkatsuzō Futagoza (分割像双子座, Splitting Image Gemini): Upon release, Masahiro takes upon the appearance of his opponent, and wields a duplicate weapon.
- Bankai Special Ability: Bunkatsuzō Futagoza's ability lies in its Absolute Mimicry (絶対的な擬態, zettai teki nagitai). Through which, Masahiro can mimic his opponent's abilities and weapon to their fullest extent; however, he can only use the abilities he has seen his opponent use since his Bankai's activation.
|Captain: Nathaniel Koroshiya | Lieutenant: Zane Koroshiya | 3: Sasuke Uike | 4: Sakaki Uike | 5: Yuuichi Morino|
| 1: Masahiro Kurokawa | 2: Soujiro Ishiguro | 3: Kaito Shimuzu | 4: Kyousuke Imai |
5: Ryou Fujimoto | 6: Kenta Nakashima | 7: Michiyo Hikifune | 8: Kazuma Yumi