Jaku-chara Tomozaki-kun - Volume 2 Chapter 1 part5

In a land filled with magic, she was born without any visible powers. A princess, more pitiful than the slaves. Even if, in the eyes of others, she was a princess just in the name, Cassandra knew she was special.Amid all the power struggle, she had only survived by being docile, but when her gaze collided with his, her world turned upside down.For once, she wanted to live. Cassandra wanted to break free and experience new possibilities the world had to offer.But how far can an unfavorable princess go?What will be the cost of rebellion?Follow Cassandra as she uncovers her true self and turns herself from an unfavored princess to the Empress of people.

But now with hypnosis.

A crumbling empire, a turbulent government, widespread chaos, and an international arena filled with covetous foreign powers—this was Spain in the latter half of the 19th century. Reborn as Carlo, the first Spanish King of the House of Savoy, his absolute priority right now is figuring out how to secure his throne.

As a man who had lived for 20 something years and had always considered himself as a straight man, he woke up one day and found himself possessed by a stupid and cute system. Moreover, it was a gong-shou cultivating system?! Let’s see how a shou with raised hackles evolves into a (pseudo)queen shou, incidentally with a story of a hidden loyal dog gong.

- Description from Novelupdates