As a young professional recently out of a relationship, you embark on a journey to Kyoto, seeking personal growth and perhaps a new romantic connection. Little did you expect a Yokai, a devil from Japanese mythology, to appear! You're transported to the Yokai realm, where you meet three captivating young men of different Yokai races—Hayato, a half-Oni; Yukio, a Yukiotoko; and Karasu, a Tengu.

Strangely, they all seem eager to propose to you. Yet, life isn't perfect; the sky darkens as the town's Yokai grow increasingly resentful toward humanity. Can you help these young men heal from their past while also soothing tensions between Yokai and humans? Is it possible to fall in love with a devil? Whatever lies hidden within your Yokai soul will be revealed.

The Proud Half-Oni (Hanyo): Hayato is a blend of human and Oni, often offended by the Yokai World's view of humans. He has conflicted feelings about his half-human side and his attraction to you, leading to abruptness at times. He aims to lead the Yokai World as its next Ruler, but he needs a strong queen to achieve this. Will you rise to the challenge?

Yukio, renowned for his stunning looks among the Yokai, loves conversing with women. As the sole male of his race, he exudes instant sex appeal. Yet, as he searches for his definition of love, he remains indifferent to them. However, he knows unequivocally that there is only one human woman for whom his heart beats—you. Can you withstand the allure of this popular young man and teach him the true meaning of love?

Karasu, the Lost Tengu, embodies all that has been taken or misplaced. Despite witnessing his elder brother's horrific actions, Karasu has become distant and unemotional. Once sociable, he is now uncertain about his feelings for you, torn between pushing you away and sacrificing his life to protect you. Can you help him overcome his brother's past and reclaim a fulfilling life?