TouyaSpoil Spoiler Alert: The following article has information not currently present in the anime or manga. Do not proceed unless you want to be spoiled.

Ruri (瑠璃 Ruri?) formerly known as The Blue Dragon (青竜 Seiryu?) is a companion and contracted beast of Touya on his journey. She is one of the Four Divine Beasts and also the leader of the Dragons.


Ruri is shown to be dragon like the other Four Divine Beasts she is in a smaller form.


She is shown to have an extremely calm and rational personality as opposed to some of the other Divine Beasts.



  • Intimidation Aura: She is able to release a suppressing aura that renders immobile all individuals who have lower magic level in respect to the divine beast.
  • Long-Ranged Telepathic Communication: She is able to make telepathic communication with her master and among the divine beasts regardless the distance. She also able to include other people into this communication line.
  • Form Transformation: She is able to change her menacing true form appearance into cute young dragon form (Child Form) and back as she pleased.


  • Due to their contrasting personalities she has a somewhat difficult relationship with Kohaku.
  • Her name, Ruri (瑠璃), is the Japanese word for the gemstone Lapis Lazuli.



Four Divine Beasts
Master: Touya Mochizuki
Members: Kohaku  •  Kokuyou and Sango  •  Kougyoku  •  Ruri
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Affiliation: Brunhild Dukedom
Brunhild Dukedom
Monarch: Touya Mochizuki  •  Linze Silhoueska  •  Elze Silhoueska  •  Yae Kokonoe  •  Yumina Ernea Belfast  •  Leen  •  Sushie Ernea Ortlinde  •  Lucia Rea Regulus  •  Hildegard Minas Restia  •  Sakura
House of Mochizuki: Karen Mochizuki  •  Moroha Mochizuki  •  Kousuke Mochizuki  •  Sousuke Mochizuki  •  Karina Mochizuki  •  Suika Mochizuki  •  Takeru Mochizuki  •  Regina Babylon  •  Paula  •  Laim  •  Lapis  •  Cecil  •  Renne  •  Julio  •  Claire
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Alliance: Kingdom of Belfast  •  Kingdom of Mismede  •  Rifurisu Empire  •  Regulus Empire  •  Ramisshu Holy Kingdom  •  Kingdom of Lihnea  •  Restia Knight Kingdom  •  Federation State of Rhodomea  •  Xenoas Demon Kingdom  •  Eashen
Locations: Silver Moon Inn  •  Fashion King Zanac
Group: Babylon Sisters  •  Four Divine Beasts  •  Bride Conference  •  Elite Four