If you're looking for manga similar to The Ex-Villainess's Unsightly Daughter: A Beady-Eyed Commoner’s Journey to the Top (Novel), you might like these titles.
With the advent of the transcontinental railroad, smoke from steam locomotives veils the cities and mercenaries are a thing of the past. Sword, a mercenary, is down on his luck when he accepts a job from the bestselling lady novelist, Verderon. They set out on a journey to a dangerous, uncharted mountain... Only to be caught up in a conspiracy between church and state?! A tale of iron swords and typewriters!
Guy reincarnates into the world of an otome game as the heroine, but since his favorite character is actually the love rival, the "villainess," he'll crush his romance flags with all 100 of the game's love interests to steer his bias into a happy ending.
Sonia Carnelian is the only daughter of the Witch of Salvation. However, during the wedding ceremony that was done in accordance with the treaty, the Prince breaks their engagement, and she is condemned as an evil witch. “In the original work, ‘the last boss’ will get angry, but I’m not that stupid.” ― Sonia escapes the crisis with the knowledge of “anime” gained by peering through the previous life. And she gets the Prince’s Knight in exchange for the insult.
After his pet died, Yamagata Tatsumi lost his will to live and spent everyday meaninglessly. But since her death, every night he dreamed about a girl praying inside a room made of stone. 10 days passed and he reminiscences about the bird while playing with his acoustic guitar the song they used to sing together. Then suddenly the area around his bed began to shine, and the scenery around him changed. He was still on his bed, but the room turned into the one from his dreams, and the girl was there. The girl was teary eyed and then jumped upon and embraced him. The girl, Holy Woman Calzedonia, smiled brightly and said “Finally… finally we meet again, master… I am your pet…. Chiiko!”