Si Yin is Ye Yin's master, or Shifu. As his disciple, Ye Yin grew up under his care since young. Together with Fei Niao, another disciple of Shifu, they resided together in a teahouse. As such, they have a very close relationship.
Male
Character: Isiah Nephme
Isiah is first introduced as a nobility. However, it is later revealed that he is of royalty. Despite his initial attitude, it is evident that he cares deeply for Salleal.
Character: Lucretius
Lucretius Le Crensia, or Luke for short, is the crowned prince of the Crensia Empire. Soon after the assassination of the late emperor, Luke ascended as the emperor of the empire.
Character: Yuri
Yuri is the prince of the Rossiyskaya. He is also first-in-line for the inheritance of the throne. While he always appear gentle and amicable, he is also shown to be shrewd and calculative.
Character: Lawrence
Lawrence is the leader of a group of young survivors who formed a base in a high school. He is clever and responsible, which earned him the trust of the survivors he leads.
Character: Wang So
Wang So is the 4th Prince of royal family. Shunned by his family and the public for his scarred face, he was given a degrading nickname "Wolf Dog". Despite his cold appearance, he greatly yearns for love and acceptance.
Character: Xu Si Bai
Xu Si Bai is an extremely talented medical expert and forensic scientist. He is highly popular among the girls for his good looks, intelligence, and gentle nature. Xu Si Bai is a close friend of Bai Jin Xi.
Character: Haruka Fujisaki
Haruka is Konatsu's classmate, and also the class president of her class. Haruka has an outgoing and cheerful personality. He is also very kind and helpful to Konatsu.
Character: Kitou Hijiri
Kitou Hijiri is a smart, handsome, and capable student. He is the valedictorian of his grade. Strangely, he failed his test only for Ayano's class by submitting an empty script. Turns out, Ayano holds a special place in his heart.
Character: Liu Wen Zhao
Liu Wen Zhao is the main housekeeper of the affluent Jin family. He had lost both his parents at a young age. Thus, his aunt Liu Ru Yue, who is the head of Jin family took him and his younger sister in. While he lived in the residence, he quickly learned the ropes of housekeeping and management.
Yanderes and Obsession 