Masakiyo Seiki

Masakiyo Seiki (世鬼 政清, Seiki Masakiyo) is a fictional character in Chikai no Sanshi.

Helping Motonari at Mount Ogura
He appeared during Motonari and his vassals journey at Mount Ogura. They was attack by Heizō. Seiki so follow Kuchiba to aid Motonari, with the merit that he has done, make him became a leader of a ninja unit.

Found an orphaned girl
In 1557, he followed his master to war against Ōuchi Yoshinaga and gained victory. After the battle He went to look at the castle and found that all the concubines committed suicide. He therefore withdrew, while he leaving the castle, he had found an orphaned girl. He so decided raised a girl as his own child and he was trained the girl as kunoichi and was named “Hotaru”.

During the reign of Terumoto
Seiki became an esteemed and respected veteran of the Mōri​ army and participate in battles against the Oda​ army and the remaining Amago loyalists. When the Mōri army were able to subdue Amago Katsuhisa, he received orders from Kuchiba, Fukuhara​ and Shiji Hirotada to assassinate Shikanosuke, because they don't trust Shikanosuke and afraid of a rebellion. He doesn't trust Shikanosuke already, so therefore obey the them orders.

During the battle against Ieyasu, Hotaru to have more love for Terumoto. So he tried to warn Hotaru that don't do anything prematurely but after the battle at Gifu Castle, He then decided to have Hotaru in love with Terumoto.

Quotes

 * Seiki : I don't know whose is this child ?, but forgive me
 * Seiki : Did you stop crying for me ?
 * Seiki : ( Look at this eagle... )
 * Kuchiba​ : Were there any survivors ?
 * Seiki : None at all. They all committed suicide.
 * Kuchiba : I see... I understand. Thank you.
 * Seiki : Excuse me.
 * Seiki chat with Michiyoshi Kuchiba while investigating the Rengeyama Castle.




 * “ This is the end ! ”​
 * “ My Lord, think of the feeling of Hotaru, please do it. ”

Etymology

 * The name Masakiyo means "government" (政) (masa) and "clear, pure, clean" (清) (kiyo).
 * Masakiyo's surname Seiki means "world" (世) (sei) and "demon, ogre, daemon" (鬼) (ki).