After Being Poisoned by My Favorite Concubine, I Became a Wise King.

In his previous life, he was foolish and cruel, and ended up being mercilessly poisoned by his beloved concubine. In his new life, he recognized his responsibilities, was responsible for the throne, the loyal ministers and the people, and was more responsible for the concubine who truly loved him. As for the unknown queen, he allowed her to find true love, but after his rebirth, the queen refused to leave and threatened to stabilize the country with him! [Harem + Foolish King + Throne + Daily competition among concubines in the harem + Daily private visits in private + semi-powerful tactics, etc.]