However, the siblings got separated soon enough. The girl became the selfish queen of the kingdom and her brother became her loyal tool.
a servant of evil.
kimi wa oujo boku wa meshitsukai
unmei wakatsu aware na futago
kimi o mamoru sono tame naraba
boku wa aku ni datte natte yaru
You're the queen, and I'm your servant.
We're a pitiable pair of twins separated by our fate.
I'm willing to become evil for you,
if only so that I could protect you.