The Emperor Wants to Retire

I died and woke up reincarnated inside a hardcore BL novel written by my friend. And as Emperor Ishar of the Lachest Empire, an extra who gets killed by the main lead, Beloin, after working my bones to the ground for ten years straight without a single day off, and has his throne stolen. After sitting on the throne in place of my troublemaker brother and working until my nose bled for four years, I realized this fact and made a decision. 'My only means of retirement...!' If I can coax the still-not-crazy main lead and push him onto the Emperor's throne, I can escape the hell of work and live a leisurely retired life. Just in time, I brought Beloin, who needed help, into the Imperial Pal...