If you're looking for manga similar to Love Tyrant, you might like these titles.
Onizaki Teppei is a high-school freshman who just wants to live a plain student life, but his world is rudely shaken by a mysterious girl, Mitogawa Enma, who declares her intent to find a husband at the school!
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Both series are really crazy harems comedies, which are actually funny for a change. One features a demon-girl while the other features an angel-girl (though both are equally messed up) and both series feature a yandere girl. If you liked one you can't go wrong with the other.
Jutten! is about a boy who goes to his first day of high school, thinking it'll be full of awesome (pervy) meetings with sexy girls and whatnot, but instead has a lot of bad luck and gets peed on by a dog--amongst other things. A girl who uses her bike to drive over his ass sorta helps him and gives him a handkerchief with a 10 yen coin in it and ... very plausible stuff happens afterwards.
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Fujimura is a loner delinquent at his school. Feared by his classmates since the first day of high school, he's had no friends and usually ditches class. But even his standoffish nature can't hold up when a class representative with a few screws loose comes after him! And two more class representatives. They're a few cards short of a full deck too.
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If you found either of those manga funny, the other one should suit your taste as well. Both series are crazy harem comedies, but for once they are actually funny, though Fujimura-kun Mates is probably the better one among those two.
Uryu Kamihate has had a rough start to life, but plans to forget it all by achieving his dream—matriculating into medical school. But when he arrives at his new foster home, a working shrine, his dream of a quiet place to study goes up in smoke. Not only will he be living with the three beautiful, lively Amagami sisters—but he learns that he must marry one of them and take over the temple!
In a world where everyone has the ability to use magic, Kazuki Shikimori -a descendant of the world’s greatest magicians is now being sought after by girls -for his genes!! Can he stay alive? Because these girls will seek his help and cause his limited magic to drop to zero and turn him to dust.
Taketo Akutagawa attends a school for geniuses: Inspiration Academy Private High School. Taketo is a genius novelist and writes erotica. Despite negative perceptions many people have of him, he aims to be at the top of his class and be recognized as the world's greatest writer.
Kaga Ryosuke, a helplessly romantic teenager, was walking in the rain when he sees a beautiful girl with red eyes drenched in the rain. Everyone was avoiding her, but Ryosuke was taught to treasure women so he offered his help by letting her dry off at his home. Ryosuke can't imagine that this mysterious girl would stab him in the chest and leave him to die… Or did she? Who is this pretty girl and what does she want with him?
Mikadono Shōgo, the son of an industrial magnate, has until the end of high school to find a girl he loves for marriage because of his late father's last will. For that, he transfers into Miryuuin Academy. Among the students there is a girl who says that she is Shōgo's separated-at-birth sister, but she does not inform him of her identity. She and some other girls then try to get close to him.
When the mantis-like aliens known as Kiseichuu descend on Earth, they have one goal: eradicate the human race. They do so by absorbing humans' H-energy--the sexual passion that fuels so many people and keeps the species reproducing! The government has assembled an elite team of superheroes to fight the bugs, aided by technology that allows them to transfer their erotic energy into super powers. High schooler Retto Enjo is recruited onto the team, partnering with four beautiful girls, one of whom is his childhood friend Kirara Hoshino. Though they were once close, they've grown apart in recent years, since Kirara turned distant and aloof after an encounter with the Kiseichuu in her youth. Can Retto save the world, keep his team together, and maybe even melt his childhood friend's newly cold exterior?
Far in the future, Japan has become a land ruled by magic and those who wield it. Akuto Sai arrives at Constant Magical Academy—the most prestigious magic school in the world—for his first year of high school. The only student to pass the Academy’s intense entrance exam, he has his sights set on become a High Priest, the most powerful and virtuous magician in the land. However, when he arrives at the Academy, his future occupation is prophesied to be… The Demon King?! Now Akuto is the number one target on campus, and he must navigate his way with the help of his friends—a troublesome delinquent, a beautiful observer android, an honor-bound class representative, and a mysterious girl from his past—through the seedy underbelly of the world’s premier magic academy.