I'm not sure specifically which 'the unwanted room mate' story you are referring to. There could be many stories with such a title. It might be about a person who has a roommate that causes problems like being noisy, messy, or having bad habits. Maybe the roommate doesn't pay their share of the rent on time or is generally unpleasant to be around.
One possible plot could be that the unwanted roommate is extremely untidy. They leave dirty dishes everywhere, clothes all over the place, and don't clean up after themselves. This makes the living environment unpleasant for the other roommate.
One common theme is the power dynamics between the alpha and omega. The alpha is often seen as the stronger, more dominant figure, while the omega is more submissive. But in many fics, this dynamic is explored and sometimes subverted.
Love and loyalty are likely themes. Since it's about a contracted mate, the idea of being committed to each other would be central. Also, power dynamics could be a theme, as an alpha often implies a certain level of power.
Love and power are common themes. The alpha king has power, and the relationship with his mate often involves power dynamics. For example, in many stories, the alpha king has to balance his leadership duties with his love for his mate.
One common theme is protection. The alpha's possessiveness often stems from a deep - seated need to protect their mate from all kinds of threats, whether it's other werewolves or external forces.
One popular 'alpha's omega mate fanfic' is 'The Alpha's Unexpected Omega'. It has an interesting plot where the alpha discovers his omega mate in an unexpected situation, and their relationship development is full of twists and turns.
Love is a very common theme. Usually, it's about the strong, often fated, love between the main character and the alpha king. Another theme is power. The alpha king has a lot of power, and how that power affects their relationship is often explored.
One popular Stiles alpha mate fanfiction could be 'The Alpha's Mate: Stiles' Adventure'. It often features Stiles in a world full of werewolves and his journey as an alpha's mate. He might face challenges like rivalries within the pack and threats from outside. Another could be 'Stiles and His Alpha Mate: A Bond Forged in Mystery' which delves into the mystery of their bond and how it develops over time.
I'm not sure specifically as I haven't read this exact novel. But generally, in such a story, it might involve a romantic relationship between a student and a professor who is also an alpha mate. There could be elements of forbidden love, power dynamics, and the challenges that come with such an unusual pairing.