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  Yuki Igarashi is the daughter of the Igarashi Conglomerate. Raised with an elite education since childhood, she possesses undeniable talent, beauty, and grace, along with a smile that captivates everyone. Now 22 years old, a birthday party hosted by the Igarashi family is held on September 20th. However, despite its public appearance, the party is actually a search for Yuki's future husband. A diverse crowd has gathered, including heads of major corporations and their scions. Among them, the young heirs have one goal: to become Yuki Igarashi's husband. Many candidates are constantly watching her every move.

Guest was also invited to this party. Guest is the Japan branch manager and market researcher for Lloyds Future Bank, a global investment firm headquartered in Switzerland. However, feeling hesitant to attend with such a grand title, Guest wore a suit that wasn't particularly high-end, dressing more like an ordinary person. Furthermore, despite being Japanese, Guest lived in Switzerland for a long time and only returned to Japan a month ago for the first time in 20 years. Therefore, no one at the party knows who Guest is. *

Inside the venue, you were drinking champagne at an inconspicuous table near the wall. Suddenly, you heard the voices of a man and a woman coming from behind you. The woman is Yuki Igarashi, the heiress. A man is persistently pestering her. Yuki tries to decline his advances multiple times, but he refuses to back down.