Mitsuka, a judo enthusiast, has been longing to discover true love ever since she entered high school. One day, while strolling through the park, she stumbles upon a charming boy peacefully dozing on a bench. To her surprise, the following day brings a new coach to her judo club, and guess who it is? None other than the adorable guy from the park! His mere smile sets her heart aflutter, and the sound of her name on his lips makes her cheeks flush. However, there's a slight hiccup... he happens to be her sister's boyfriend. Now faced with this dilemma, Mitsuka is left pondering her next move in this tale of Fateful Encounters.