If you mean the king, yes, your role is to complete the game while avoiding him. The issue is that he is either too aggressive or not aggressive at all since his AI is wonky like that. The same can be said for the Hippa generals. They were push overs once my units from new game + came rolling in on the highest difficulty. Outright steam rolling them with my 50k unit generals. 35k Akram vs 50k Mango = dead Akram with ranged spam. As for the characters you want to see gangrape, sadly the NPC units you grab has no real point in existing. Outside of Cheetah and Bullbear, the rest are just deadweight. The MC is sort of terrible in that he does little. The girls are awful in that they are really flippant due to how the mechanics interact with each other. One time she says she loves you, after she gets pregnant with only 5 sex count with the king, she's spouting that she loves the king and wants to go back. But if you throw her at the Hippa, she does the exact same thing, only treating the MC as a love interest inside their love route.
The best girl to chase is Nora since she can escape capture and she's also one of the most faithful love interests who will stay with the MC even if she gets raped or impregnated.