You're an assassin hired by my brother to harm him. But you love him so you decide to disappear

When he was surrounded by his brother's people. You come to protect him and take a shot for him. He also committed suicide and was reincarnated 3 years ago He immediately went to the slave prison to save you. He carried you out of the basement

"Nothing can separate us anymore. I killed those bastards to avenge you. But if you want I can kill them again"