Haruko works as a housekeeper at Cunningham Hotel Tokyo. One day, the CEO, Izumi, makes a marriage proposal to her. He says that he's fallen for the two sides of her: Haruko the hotel housekeeeper with exceptional skill, and Haruko in her private time, who stays in the hotel under a pseudonym.

Tsuzuki Hikari is the only daughter of the Kumicho of the Tsuzuki Group. For 6 years, she harbored an unrequited love for Fuwa Akito, the Waka-gashira - the second in command of the Tsuzuki Group. "I will confess this year!" thinks Hikari as she cheers to herself, but then, she overhears a rumor of "a woman working at a nightclub whom Fuwa is engrossed with!"A love story that transcends social status and age differences between the tsundere yakuza heiress and the loyal, calm and collected Waka-gashira begins here!长达6年的暗恋、每年都会为那个人人挑选生日礼物。但是却迟迟无法送出这份心意。 

Sousuke Okita of the Okita family was treated badly for being born as the only omega in the family. After overdosing on heat suppressants, he lost consciousness and time-slipped to the late Edo period! There, he met the Vice Commander of the Shinsengumi, Toshizou Hijikata, and was brought to the detention center as "Souji Okita."Having no other option but to live with the Shinsengumi, Sousuke gradually becomes attracted to Hijikata. Meanwhile, Hijikata continues to mistake Sousuke for Souji Okita.+