well, going by cover-art alone, we've got the blonde present as well, gonna call it now (since that seems to be the overarching theme of this one), not only is he going to win this "fight" handily while never taking it serious, he is either going to flip her switch and get forced upon by her, accepting it like the "gentleman" he is. Or she is going to somehow drink his blood, read/see his memories and then force herself upon him (as the MC of this, while not unwilling to step up, has had every woman he's been with take charge at first).
Afterwards, Vampire and Hero's Successor will meet, probably within the time frame of the end of the next chapter or within the next 2-3 chapters, the two will have a spat, MC will step in, and the fight will end with all three in bed somehow.
That is my prediction