Unbeknownst to Me, I Am Secretly Dating the Emperor

I was reincarnated in a romance fantasy where the warmongering, tyrannical emperor falls in love with the saintly heroine. "The emperor entering a romantic relationship with the heroine and then falling in love is something only high society would gossip about." For a minor official in the imperial palace who couldn't even become an extra, whether I have to work overtime tomorrow is more important. Still, living diligently like a good citizen seemed to reward me with a handsome boyfriend... "Are you planning to hold hands throughout the entire relationship and only kiss at the wedding?" "You'll regret it." "I won't." Can I just take back what I said? For an extra, he was way too handsome... (Source: Yeondam, translated)