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.
Possessive
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: 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: 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: Tamaki Marui
Tamaki is an energetic and cute boy whose original form is a tamago sushi. Although he looks very young, he is actually the same age as the protagonist (18 years old). He is a great help to the sushi restaurant due to his cooking skills. However, Tamaki can act spoilt, and gets jealous easily.
Character: Togon
Togon is the heir apparent to Yuan's throne. Under Nyang and other's support, he eventually became Yuan's emperor.
Character: Izumi Suga
The protagonist met Izumi Suga at a dating party. As Izumi seems very quiet at the party, the protagonist decides to talk to him. After which, they began chatting via the LIME app.
Yanderes and Obsession 