Hanayomesama Wa 16-Sai
Tamaki is an only child brought up by her mother alone. But then, her mother passed away due to an illness, and now she has no relatives. When she visited the Ootori family - a family that's totally strange to her - according to her mother's will, the one waiting for her was Shinga, a super rich and hot guy, but also extremely arrogant and horrible. Suddenly, he declares that starting today, she's his wife, and he stole her first kiss?!
Tsuki no Shippo
Sometimes it seems like Usagi is hopeless. Sure, she's good with healing herbs, but she's the granddaughter of the leader of a prestigious ninja village and she's such a klutz that she's never made it out of the kiddie class. Finally frustrated with Usagi's lack of progress, her grandfather sends her to marry a local lord and have lots of ninja babies. But the lord has no interest in her or her child bearing potential! After years of goofing around, Usagi is finally determined to reach her goals - she's going to become a ninja and capture her true love's heart!
Zettai Heiwa Daisakusen
The long-lasting war between the Northern and the Southern Kingdoms is unbearable. So the northern Prince Johane and the southern Princess Euda decide to tell everyone they are in love, because their marriage can stop the war. But the truth is they don't get along at all!
When Kazura Enomoto's grandfather dies, he leaves her to the son of a rich family, Mizuki Magahara, as payment for his debts. After she goes to live with him, Kazura learns that she's not going to be working off the debts as a servant—she's going to be Mizuki's fiancée!
The heroine, Tokieda Nao, discovers that she has an Unexpected Fiancé! It seems her father's company is having difficulty, so in order to save it, he set up an arranged marriage between Nao and the son of a wealthy man.
Let's Get Married!
Touko has always heard stories about her dead grandfather and his lover and wishes to one day find a love like theirs. However, this dream is suddenly crushed as her grandfather's lover appears and forces Touko to take on her two grandsons as fiancés!
Be My Sweet Darling
Yoo Nan Hee is a high school girl and also the leader of the drama department. She was always a cheerful person, but everything changed when she began to feel something for Jan **** Yung. When she discovers that Jan **** Yung is dating the princess of class 12, Oh Eun Yung, she ends up getting drunk. The poor Jang **** Yung gets stuck with taking her home but because of an accident he momentarily decides to take her to his house instead.
Once there, she accidentally knocks him out and takes his clothes off for him because he fainted. The next morning her parents see the shocking image and decide that they must get married! Now they have to try to live a normal life… if they can…
Sakura Hime Kaden
Sakura is a princess who lives alone with a few maids in a mansion deep in the mountains. She's been engaged to the prince of the country since she was born. She doesn't like that fact, as she wants to decide her fate on her own. However, one day, a messenger from the prince suddenly came to take her to the capital...
The Bride of the Water God
When Soah's impoverished, desperate village decides to sacrifice her to the Water God Habaek to end a long drought, they believe that drowning one beautiful girl will save their entire community and bring much-needed rain. Not only is Soah surprised to be rescued by the Water God-instead of killed-she never imagined she'd be a welcomed guest in Habaek's magical kingdom, where an exciting new life awaits her! Most surprising, however, is the Water God himself . . . and how very different he is from the monster Soah imagined.
Happy Trouble Wedding
19-year old Narika Yoshikawa lived a poor life with her single mother. But when Narika's mother passed away, she was forced to follow in her mother's lifestyle, which unfortunately, also included her debts. One night, some men come to her door and demand 3 million yen that Narika's mother borrowed from them. She's saved by a strange man who pays the money to the men, and tells Narika that he just "bought her" and if she marries him, he will give her anything she wants! What exactly is going on?
Ara - a pretty high school student - finally gets the chance to cozy up to the guy of her dreams, but she blows it and ends up kissing the wrong boy under fairly compromised circumstances. Hilarious complications, mistaken identities, and misinterpreted signals ensue, and Ara soon finds herself being backed into an arranged marriage she at first wants no part of...
After failing an entrance exam to her school of dreams, Hiyoko Osora gets an acceptance letter from SM academy without even applying.She arrives at the school and gets a huge shock...All the students are monsters!. The head of the student council namely Kouro introduces her to the entire school and claims her as his fiance..then sprouts black wings.
Himitsu no Himegimi Uwasa no Ouji
Roochen and Galnia are two countries that have been at war with each other for a long time. Now that peace has been established, princess Aldina of Roochen has to marry the prince of Galnia. However, according to the rumors, the prince of Galnia is a total debauch, and he does nothing but playing around?! Aldina wants to see for herself who the prince really is, so she disguised herself as a boy and tried to approach the prince...
Yuiko's parents passed away leaving her to start her new life with her aunt. But Shun appeared and said he is her fiancee, however at school Yukio approach a couple that are having a fight, the guy, Takami said he is going out with Yuiko. So what is the situation?
Bai-Yao's father is the owner of one of the largest media companies in Asia. She is beautiful, rich and popular so she is considered as a modern-day princess.
Even though Bai-Yao is being railroaded into an arranged marriage by her mother, our princess is in a secret relationship with the famous male singer Yin, who is represented by her father's company. Working at her father's company is Tien, an errand boy with dreams of becoming a songwriter, who also happens to adore Bai-Yao.
The trio's lives are entangled when a unexpected death happens.
Bitter Trap (TAKAGI Shigeyoshi)
Nanao came from a rich family before their business failed. Now the only hope for her family to pay off their debts is if she can cement a marriage with the prestigious Takatsuki family within a week. How will Nanao overcome this problem when one of the three eligible Takatsuki men is her former arrogant schoolmate, Yoshito, who completely distrusts people? And did we forget to mention that Nanao is already the ninety-ninth candidate for the position of future wife?!But is she really there to pay her family's debts or is it for....
Midori lost her mother when she was young and now her father's gone too. But her dad left her with a surprise: a fiancée named Tetsuya. So now, Midori has to live in a good-looking men only apartment (Harem Lodge), which is actually filled with weirdos. What is going to happen to her? Well we just have to wait and see...
Men - they're the root of Takanashi Chiwa's problems, which is why she never had the time nor the opportunity to have a boyfriend in her entire life. A full-time office lady and a part-time hostess, she works night and day to pay off her dad's debt from his failed business. One night at her part-time job, a high-class customer has her fired. Then the next day, she's called in to see the president - whom she had never even seen before in the office - only to find out she's to marry him! But what kind of guy is Mamiya Hokuto anyway? Will he become one of Chiwa's problems, or will he save her from them? And will this marriage even last?!
Ojousama wa Oyomesama
Towako the ojou-sama (daughter of a high class family) will be turning 18 years old soon. When she was very young, she was told that on this 18th birthday she is to marry the young man who was born on the same day, the same time, and the same year as she was. However, during their first meeting, Yuuga was incredibly mean to her! What's Towako to do when her husband-to-be is the shy and cool type of guy?
Si-Joon has a recurring nightmare about being eight years old and lost in the woods. In his dream, he is forced to marry a strange girl whose face is obscured behind a pig mask. Unsettling as it is, at least it's just a dream… On his sixteen birthday, though, the girl with the pig mask appears in his room — declaring that she's come to share their first night together as husband and wife!
All time favorite but not completed *Waaah* would be Hapi Mari
Hope this Helps!
Here are some manga with the theme of 'forced marriage':
~Fated to Love You
~Haikara-san ga Tooru
~Kamen no Hanayome
~Kazekaze no Hito
~Kitsune no Yomeiri
~Koi no Himitsu Kichi
~Faster than a Kiss
~Adarushan no Hanayome
~Zettai Heiwa Daisakusen
Hope this helps!
Ranma 1/2 is rediculous. It's older, but very funny.
Sakura Hime Kaden is unfinished and seems to be on hiatus, but it also shows potential.
Also Faster than a Kiss is very good, though I'm not sure if it is what you are looking for. Best try it out to see if you are interested though.
The second two can be found on onemanga.com.
Hadashi no Bara Wo Fume!
In the manga, a girl has to marry a guy because she desperately needs money for her family! Its really good!
the manga has to have a pregnant woman. And how their adapt