Battle Spirits Wiki
The SixShieldEmperor Kei


Name The SixShieldEmperor Kei
Kanji/Kana 六楯の皇帝ケイ
Released in (Japanese) Promo
Color Red/Purple/Green/White/Yellow/Blue Red core.pngPurple core.pngGreen core.pngWhite core.pngYellow core.pngBlue core.png
Cost 6
Reduction Red core.pngPurple core.pngGreen core.pngWhite core.pngYellow core.pngBlue core.png
Symbols Red core.png
Family Six Shield Emperor
Level 1: 1 core, 4000 BP
Level 2: 2 core, 6000 BP
Level 3: 3 core, 7000 BP
This Spirit card can't be summoned without paying at least 1 cost.

[LV1][LV2][LV3] (Either Attack Step) All your Spirits are unaffected by opposing Burst effects.

[LV3] (Your End Step) By returning a Spirit you control to your deckbottom, activate your Burst of the same color and an equal or lower cost than that returned Spirit, ignoring the condition.
Flavor Text
"I hereby declare the founding of the Six Shield Empire!"
Rarity X-Rare
Illustration Rei
Rulings/Restrictions None


  • She is only revealed to be a female to players/audience by the end of the story and at her proposal to Manaka in the armistice conference.
  • Having married to Manaka, Kei bore three children and one of them, Kunimi, became the successor of Kei as the emperor (his story briefly told in BSC15). After ten years of reign, Kei resigned from the post and went for a round-the-lands journey with Manaka, and finally passed away at the age of around 41.
  • Compared to Manaka, Kei is rather cold and serious. However, from the beginning till the end, she puts the well-being of the people she cares for and the future of the six countries as the first priority and carries out every possible sort of action to help the people in her way.
  • She is merciless against enemies and traitors, but seems to be bad at handling cute beings. She is said to be a strong fighter and a brilliant leader, with sometimes a reckless spirit, as commented by Manaka when both were young.