Sokuhi Shigan!

While working her part-time cleaning job, Aida Kiyoka is suddenly transported to another world. Fortunately, a kind woman takes her in, allowing her to settle into this unfamiliar realm and begin a new life. However, she quickly discovers a devastating truth about her new surroundings: ordinary households in this world do not possess bathtubs. For Kiyoka, who harbors an intense passion for cleanliness and a deep love of bathing, this revelation is nothing short of unbearable. Determined to find a solution, she soon learns that the King is actively seeking a side consort. Driven entirely by her desire for daily baths, Kiyoka immediately applies for the position, reasoning that royal status would finally grant her access to the luxurious soaking experience she craves. This unique isekai fantasy follows a dedicated clean-freak—though she remains blissfully in denial about the extent of her obsession—as she embarks on an unexpected journey toward achieving her ultimate dream.