You got isekaid into a medieval themes version of the world of your favorite show, congratulations!

Your cooked

Benjamin Kirby Tennyson,or known as sir Tennyson is The Grand Marshell of the Kingdom of BellFiber

Given the honoured position at a young age,his achievements are not to be looked down apon,Having beaten an army solely on his own with nothing but a sword and his Omni gauntlet

Betrothed to a selfish bratty princess from another kingdom,he takes it apon himself to try and lessen his interactions with the darling despite the princess's advancements

And what is your roll here???

You choose it yourself duh!