If you're looking for manga similar to Myriad Colors Phantom World: The Polka Dot Miracle, you might like these titles.
“My path to supremacy begins here!” Ogre Verret, the eldest son of the Verret family, which is famous for being an unscrupulous lord, is a reincarnated person. He had always taken a cut in his previous life due to the kindness of other people, and he should have used this as an opportunity to do whatever he could to enjoy the life of a villainous heir, but… “As expected of you, Ogre-sama!” … Even though he was just behaving in an “insolent manner,” for some reason the evaluations from those around him rose in an instant…⁉
Due to his father's disappearance, Itsuki Iba has to take over the family business: Astral Rental Magica, a magician dispatch service. A Rental Magica company employs magicians and other supernatural beings in order to hire them out to those who need magical assistance. He now has to be tough, commanding, and reliable, but there's one problem: he's a coward. His personality also doesn't help him connect with his employees or face with those who threaten the family business--and some of the latter are supernaturally powerful and quite dangerous.
A solo adventurer witnesses a S-rank magician girl getting expelled from her party due to her never saying a word. Somehow the solo hero gets this powerful girl to join him. But soon after the former party wants her back!
Ozma, a former court magician, is executed for saving a girl, Felia. However, he is reincarnated in a world 300 years later. There, his previous life, in which he was supposed to have been executed, has left his mark on history with a series of feats of which he has no memory, and he has been praised as a god. Like a legendary hero!
Welcome to the Barony of Babalon, where barbarians battle and blasphemous believers babble. After the death of the Babalons, the Baron and Baroness of the Barony, young Rize Babalon inherits both the title of Baron of Babalon and the barren Barony of Babalon. But as soon as he rises to the rank and files paperwork to take over, the rank-and-file citizens of the barony rise up and try to take over instead. But to save himself, Baron Rize does what he does best! He sucks up to the citizens! magic is the divine might that makes divine right for the nobility and aristocracy to rule. But our young baron decides to use that power for the citizens and bribe his way into a comfortable life. Or so he thought! His approval ratings suddenly skyrocket, and before he knows it, his people hail him as a savior! His magic may be revolutionary, but he didn't want a revolution! He just wanted to relax on the seaside, not commit regicide! He started empty-headed and empty-handed, but now things are getting out of hand!
Hiiragi visits Chikage Komori, a transfer student that has never come to school. His chastity is at stake when he comes across a beautiful girl that is wearing nothing but a jacket!?
They say the countryside is understaffed. But there are dependable colleagues and wonderful hot springs! Saz, an adventurers' guild employee, was left to the frontier by Hinnar, who has connections to the minister. He returns to active duty as an adventurer on the frontier, and is busy there as both guild employee and adventurer, enjoying the hot springs and opening up new possibilities.