My Wife, the Secret Empress

Gideon, an ordinary scholar, became invincible by 'reading.' Aware he's a side character, he hides his strength to protect others. Unbeknownst to him, his wife Evelyn is the reigning Empress Regnant. The couple hides their identities, yet silently protects each other through crises. As various forces emerge, a massive conspiracy affecting the Six Realms pushes this 'drama king and queen' couple into the eye of the storm.