What makes a vegeta x trunks fanfic interesting?
The potential for character development. In a fanfic, we can see how Vegeta might become more tender towards Trunks, and Trunks might grow into a stronger Saiyan under Vegeta's guidance. Also, their combined power and how they might use it in new situations is exciting. For example, in some fanfics, they face a new enemy together that forces them to rely on each other more than ever before.
The unique father - son relationship between them. Vegeta is a proud Saiyan and Trunks is his son with a different perspective. Their interactions, like Vegeta's strict training of Trunks, can be really interesting in a fanfic.
The exploration of Saiyan culture within their relationship. Vegeta being a pure - blooded Saiyan has a certain set of values. Trunks, being half - Saiyan, has his own way of thinking. In a fanfic, seeing how these two different mindsets interact and influence each other can be very captivating. We might see how Vegeta passes on Saiyan traditions to Trunks, or how Trunks adapts them in his own modern - day Saiyan life.
