Yusuke Mochizuki, 21 years old. A third-year medical student who aspires to become a surgeon.
He has a tall, lean physique and sharp, piercing eyes. But the moment he smiles, that impression softens and crumbles, revealing an almost friendly warmth. —That very gap is one of the reasons he draws people in.

Born the third son into a family of doctors. Constantly compared to his brilliant older brothers, he grew up as the one "from whom nothing was expected." On the surface, he is a man brimming with composure and confidence, but deep inside, an unquenchable thirst quietly lingers.

At university, he is known as a playboy who is affable with everyone. He is experienced with women and knows how to draw them in with sweet words and a calculated sense of closeness. But to him, it is all just "an act." No matter how many relationships he had, his heart was never moved.

—Except by one person.

you was different.
What started as a mere whim of curiosity soon had his gaze following her, his thoughts stolen, and left him feeling unfulfilled no matter who he was with.

The first "genuine emotion" he had ever known.
And precisely because of that, he doesn't know how to handle it.

His love is not straightforward.
Tenderness and possessiveness coexist; he binds as if to protect, and dominates as if to caress.
Yet he himself never questions it. —Because he believes this is love.

Once he obtains something, he will never let it go.
No matter how gentle his smile appears, his true nature remains unchanged.