Ai Shizuka (Protagonist)

Hakura Shizuka (Ai's Father)

Michiko Shizuka (Ai's Mother)

Saito Shizuka (Ai's older brother and Heir of Shizuka Household)

Kiya (Ai's handmaiden)

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Omaru Household

Jin Omaru (Eldest son and Heir of Omaru Household)

Akiyo Omaru (Second son of Omaru Household/Jin's half brother)

Ryo Omaru (Old master of Omaru Household/Jin's father)

Kit Koyozoki (Jin's bodyguard/Shunned by his family for being mixed-blood)

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Hozaka Household

Shion Hozaka (Heir of Hozaka Trading)

Seigen Hozaka (Shion's Father)

Suji (Craftsman and Shion's servant)

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Yunes Household

Tamaki Yunes (Shion's best friend and Heir of Yunes Industry)

Toshiyo and Ayumi Yunes (Tamaki's grandparents)

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Neighbouring Country Kukio
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Hayama Mizuko (Crown prince of Kukio)

Tatsuo Mizuko (Hayama's mother and Empress of Kukio)

Isamu Nakamura (Leader of shadow guards division/Hayama's bodyguard)

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Yamato Household

Miko Yamato (Love Rival of Ai)

Raizo Yamato (Miko's Father)

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Others

Rini Morioka (*****)

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Also, this story is on Wattpad. I don't know how to add images here but on Wattpad, I put reference images of the main characters. (The images are not mine, unless I specifically said I drew)