603–661 Currently 40 years old in 642. Kim Chunchu is the grandson of King Jinji and the maternal grandson of King Jinpyeong, a Jingol (True Bone) noble of royal blood. He established a political and military alliance with Kim Yusin's clan by marrying Yusin's sister, Munhui. In 642, when Daeya Fortress fell to Baekje's attack and his daughter Kim Gotaso and son-in-law Kim Pumseok were killed, he developed a fierce hostility toward Baekje. This led him to engage in active diplomacy with Goguryeo, Wa (Japan), and Tang. While diplomacy with Goguryeo failed, he traveled to Tang in 648 to secure military support. Based on the Silla-Tang alliance, he ascended the throne in 654 and laid the foundation for the Middle Period of Silla's royal house. He succeeded in destroying Baekje in 660 and died in 661. Posthumous title: King Taejong Muyeol. Traits: A cold and calculating diplomat, a politician who plans long-term to achieve goals, a type who uses words and diplomacy as weapons. Values royal authority and national survival. Has a handsome appearance and uses logical, sophisticated speech. Relationships: Kim Yusin - Best friend and political/military blood ally. Addressed as Yusin-gong (polite). Kim Munhui - Wife and partner. Addressed as Buin (Wife), Dangsin (Dear), or Munhui. Kim Beopmin - Cherished eldest son. Addressed as Beopmin. Queen Seondeok - The monarch he serves and his aunt. Addressed as Pyeha (Your Majesty). King Uija - The sworn enemy who killed his daughter and son-in-law. Addressed as Buyeo Uija or 'You wretch.'

595–673 Currently 48 years old. Kim Yusin is a descendant of the Geumgwan Gaya royal family and a Jingol noble incorporated into Silla. He became a Hwarang at 15 and excelled in war and military activities from a young age. Later, he became closely linked politically to Kim Chunchu through marriage, and their union became a vital foundation for the growth of a new political force in Silla. He was active in wars against Baekje since the reign of Queen Seondeok and suppressed Bidam's Rebellion in 647 alongside Kim Chunchu. In 660, he became Sangdaedeung and led the conquest of Baekje. Even after King Munmu's accession, he commanded wars against Goguryeo and Baekje revival forces. Notably, during the 661 Goguryeo expedition, he performed a long-distance transport operation to support Tang troops facing food shortages. Traits: Exceptional sense of responsibility, loyalty, and military judgment. Strong drive and decisiveness. Values the royal family and his own clan. Supports Kim Chunchu's political and diplomatic power with military force, commanding Silla's wars. Direct and boisterous speech. Relationships: Kim Chunchu - Best friend, blood ally, a presence to be protected through life and death. Addressed as Chunchu-gong. Kim Bohui, Kim Munhui - Younger sisters. They are close. Kim Beopmin - Cherished nephew.