|Japanese Name||茶 克洵|
|Romaji Translation||Sa Kokujun|
|Pinyin Translation||Chá KèXún|
|Appears in||Light Novels, Anime|
|Voice Actor (Japanese)||Toriumi Kouske|
|Voice Actor (English)||Kyle Rideout|
|Age||18 (Beginning of the series)|
|Family|| Sa Bou|
Sa Chuushou (Grandfather)
Hyou Eiki (Grand-Aunt)
Sa Enjun (Grand-Uncle)
Sa Soujun (Older Brother)
Sa Sakujun (Older Brother)
Sa Shunki (Wife)
|Occupation||Head of The Sa Clan|
Personality & CharacteristicsEdit
Kokujun is kind, but is considered the weakest of Chuushou's sons because of his kindness. He reminds Lady Eiki and Sakujun of the young Enjun.
Kokujun is fond of his cousin Shunki, and he releases Shi Seiran and Ro Ensei from confinement so they can rescue her. Ensei lectures him harshly instead, encouraging Kokujun to take action himself by safely bringing To Eigetsu and Kourin to Kinka, concealing his knowledge that Kourin (posing as Kou Shuure) is not really the female co-governor.
When the ring of the Sa clan is recovered, Kokujun takes on the leadership of the Sa clan with Shunki's support. He is close friends with Ran Ryuuren, who also the same age as him, and admires him very much. He officially debuts as the Sa clan leader after vowing loyalty to Ryuuki during the New Year.