Down on his luck and out of a job, the beautiful Mito Yamamoto has a chance encounter with Ruka, a young café employee who turns out to be a real-life vampire in search of a thrall. But Mito is hiding secrets of his own.
Despite needing to find his fated partner, Ruka cannot escape his attraction to Mito. He proposes Mito attends a mixer to find a girlfriend, where a stunning lady expresses romantic interest in Mito.
Ruka's affection for Mito causes him to sideline his search for his destined partner. Before their date, cohorts harass him. When Mito unexpectedly becomes a target, Ruka must confront the situation to protect her.
Back at home, an elder reads Ruka's fortune and shows him his soulmate, predicting he will meet her that night. Despite knowing Mito's secret, Ren continues to act the same towards her, letting her dress as a girl while out in town, but.
Ruka has met his destined partner and is infatuated with her. Meanwhile, the café saves money on renovations by having the workers DIY the process. The tension between Ruka and Ren grows as Ren takes Mito home to meet his parents.
With Mito as a boy, her relationship with Ruka and Ren takes a turn as Hijirigaoka hosts its school cultural festival. After the event, Juri coordinates a mixer for Takara's sake when an unexpected person arrives for the date.
A heartbroken Mito is saved by a mysterious figure and brought to Ren's residence, where she requests a favor. The Founder pressures Ruka to marry Miko, but Ruka is conflicted until Miko receives the sang sucre.
