Hoshiko Sūdoku

**Hoshiko Sūdoku** (数独 星子, Sūdoku Hoshiko) is the 4th Seat of the 5th Division, formerly under Captain Sōsuke Aizen and currently under Captain Shinji Hirako. She is the younger twin sister of Tsukiko Sūdoku.

## Appearance

Hoshiko has long red hair that reaches her lower back, with square bangs. She has brown eyes and a light yellow, star-shaped hairclip on the right side of her hair. She also wears the standard Shinigami robes, with a shortened *hakama* resembling a skirt. During her time as a member of the 12th Division, she wore a laboratory coat over her Shinigami robes and a pair of light yellow, square glasses. Ten years after the defeat of Yhwach, Hoshiko's hair has grown longer.

## Personality

Hoshiko is the more energetic and cheerful of the twins, though she is also the clumsier and less level-headed twin, prone to following Tsukiko's leads when her own ideas for something fail. She is less empathetic towards others than her sister is, as she regards Momo Hinamori's trusting nature as a weakness. Despite this, she was later quick to make an attempt to stop Aizen from leaving after the harm he caused Momo, showing that she does have some concern for others. Ichigo Kurosaki notes that Hoshiko has a more emotional side to her personality that resembles Yuzu's, albeit more outspoken.

Aside from leading her division in the absence of Aizen and the hospitalization of Hinamori, Hoshiko is vice-president of the "Shinigami Puzzles Club", with her sister serving as president. However, they do not have many members. The only other known member of their club has been 10th Division captain, Tōshirō Hitsugaya, while they try - albeit unsuccessfully - to bribe Ichigo into joining their club. They both like sugar cookies, though Hoshiko prefers the ones that are shaped like a star. The twins often bake some for their club, but the cookies are usually gone before they can offer any to Ichigo, having been eaten by 11th Division lieutenant, Yachiru Kusajishi.

## History

Hoshiko and Tsukiko were originally seated officers of the 12th Division and researchers of Shinigami Research and Development Institute, but transferred to the 5th Division because being members of the 12th Division meant having to witness more weird experiments from their captain, Mayuri Kurotsuchi. They also felt that staying at the 12th Division would result in them being ridiculed because of their red hair color and they wanted to prove that they were worth more than their appearance. Despite having left the 12th Division, it is clear they still enjoy science and often volunteer to assist Akon in his work, given that Mayuri is not present.

## Powers & Abilities

**Keen Intellect**: Being a former member of the 12th Division, Hoshiko is highly competent in research. Alongside her sister, she also assists Akon, an expert scientist, in his work regularly.

**Swordsman**: As a Shinigami and a seated officer, Hoshiko possesses some level of skill in swordsmanship.

**Shunpo Practitioner**: Alongside her sister, Hoshiko has enough skill in Shunpo to appear before her former captain, surprising him, before the latter's retreat to Hueco Mundo.

**High Spiritual Power**: As a 4th seat in the Gotei 13, Tsukiko has a high amount of spiritual power.

**Zanpakutō**

Hoshiko's sealed Zanpakutō takes the form of a katana with a light yellow, star-shaped guard.

* Shikai: Not Revealed
* Bankai: Not Yet Achieved

## Trivia

Hoshiko is five minutes younger than Tsukiko.