The Emperor's Exclusive Love: Who Dares Lay a Hand on My Princess?

Looking for a Sweet, Angst-Free Novel Where the Emperor or Crown Prince Devotes Himself to the Heroine from the Start

Looking for stories like "Who Says a Favorite Consort Has to Fight for Power? His Majesty Spoils Her More Than Enough". Harem story, devoted love, romance-focused, no angst. The male lead gets involved in the palace intrigue himself. Happy ending, not too big an age gap, and good writing.