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Kirara (きらら)Birthday: 24 Dec / Capricorn
Height: 166 cm
Weight: 45 kg
Bespectacled, sickly older sister of Urara うらら. Due to her weak constitution which required that she stay indoors most of the time, she doesn't have many friends, unlike her outgoing younger sister.
It is implied that she is of blood type A in Episode 128, same as Hijikata Toushirou 土方 十四郎 and Kondou Isao 近藤 勲, although Hijikata assumed wrongly in the beginning that she is of blood type B (although in the anime the blood type is censored out, it can be easily derived by matching the typical characteristics with the relevant blood type groups)
Source: Gintama Wikia