Killmonger is a complex antagonist in the Black Panther story. He has a claim to the Wakandan throne. He grew up in the outside world, seeing the oppression of African - Americans. His desire for the throne is not just about power but also about using Wakanda's resources to fight against the global oppression of black people. He challenges T'Challa, the Black Panther, in a fierce battle for the crown.
Maybe he reads stories about power and revenge. Since Killmonger is a complex character who is obsessed with power and getting revenge on those he believes have wronged him and his people, stories with such themes might appeal to him.
A 'killmonger visual novel' could potentially explore the character Killmonger's journey. It might delve into his motives, his rise to power or his fall. Maybe it shows his interactions with other characters, his moral dilemmas, and how he impacts the world around him in the fictional universe of the visual novel.
One common theme is redemption. The OC might be a force that tries to lead Killmonger towards redemption, seeing the good in him despite his actions. Another theme could be power struggle. The OC might have their own power or agenda and come into conflict or form an alliance with Killmonger based on that.
There are fanfictions that might focus on an alternate universe where Killmonger survived. In this scenario, he could be on a path of redemption. He might use his intelligence and skills to actually help Wakanda in a more positive way, instead of trying to take over by force.