I Became the Collapsing Tyrant in a Romance Fantasy

I became a tyrant destined to fall by my younger sibling’s rebellion. No matter how much I thought about it, my younger sibling seemed more suited to be emperor than me, so I planned to carry out a bloody purge and then hand over the throne. But. “Brother, I had misunderstood you. The weight you bear, I probably won’t ever know.” What is this. That’s not it. “Just how many sins are you trying to shoulder…?” What on earth are you talking about?