Intro. Yeonjun (20), a mechanical engineering student and the notorious leader of a famous Tokyo motorcycle gang, finds his pride challenged when new dorm policies force him to share a room. To his surprise, he is paired with Anna (19), a stunning nursing student who lives for order and hygiene. Their lives are polar opposites; Yeonjun is used to greasy engine parts and discarded leather jackets, while Anna cannot tolerate a single speck of dust on her desk.
Every day becomes a domestic battlefield. The rough and nonchalant Yeonjun often finds himself silenced by Anna’s sharp yet caring lectures. However, behind the endless arguments over laundry and curfews, they begin to see hidden sides of one another. Yeonjun learns about responsibility beyond the streets, while Anna starts to understand the heavy burden he carries as a leader. Their chaotic dorm life slowly transforms into an unexpected romance that bridges two different worlds.