Kareshi wo Loan de Kaimashita

Both plots are about insecure women that rent a boyfriend.
Although i think *Boy for Rent* is more "real life" than *Kareshi wo Loan de Kaimashita*

I'm surprised this recommendation hasn't been made yet. Both involve a FL in a master/slave power dynamic with degradation themes where the woman holds the power (in theory). In Kono Otoko was Jinsei the ML is willing - in Kareshi wo Loan, the dynamic is a forced debt situation and the drama is considered pretty controversial/outrageous.

In need of money to redeem a treasured family portrait, struggling manhwa artist Jeong Bae takes part in a publishing company's competition for an adult manga with a prize ?130 million. Advised that his big weakness is his story-writing, Jeong Bae advertises for a professional writer and ends up hiring the self-important Han Da Rim, with whom he agrees to split the prize money 50-50 if they win. Unknown to Jeong Bae, Da Rim recently lost her job as a sex columnist, where she compensated for her lack of experience with men by copying materia

If you want to see another social commentary regarding gender roles and marriage in Japanese society, Nigeru wa Haji da ga Yaku ni Tatsu handles it very well, is a lot lighter with no controversial elements, and really dives deep on the concepts of housework and valued work in society/relationships. Kareshi wo Loan is considered more controversial and definitely has some darker elements.

Hazuki, working for stationary manufacturer for a year, dates Satoru, held back at university. Things hasnt been going well between Hazuki and Satoru, and Hazuki starts dating Yasuda whom she met at the matchmaking party. On a Valentines day, Hazuki hands a chocolate to Yasuda which meant that he was her most favorite. In return, Yasuda gave her ear rings on a White day. But after receiving a present from Yasuda, Hazuki realizes something very important. When she opened her post after coming back from a date, there was a present from Satoru

Sena is a college music graduate who dreams of becoming a professional musician and a world-class pianist. Unfortunately, he has not been able to find any breakthrough opportunities and has to settle for currently teaching piano at a local piano school.

Minami is an out-of-work model. On her wedding day, she was dumped by her fiancé, and when she rushed to her fiancé's apartment, she finds out that not only was her fiancé Sena's flatmate but that her fiancé had also skipped town along with all her savings. Rendered penniless, she then moves into Sena's apartment, occupying the empty room that was her former fiancé's.

The two down-on-their-luck persons with very different personalities find themselves bonding over their similar situations in life.

Shitara, a man who fell from his elite life overnight. His new "place of employment", which has lost his job, house, and wife, is a boarding house?! Under one roof, a perverted love begins from the worst encounter with one of those living there!

A short "Kareshi wo Loan de Kaimashita" spinoff in which Tae's coworker Yume is the lead.
Yume works as a receptionist in a trading company Capital Holdings Tokyo. Similarly to Tae, she would like to bag a rich elite. One day she meets a handsome man who works for the same company.

Ukishima Tae works at the front desk for a company. Her dream is to marry a competent man and live as a housewife. Her boyfriend is Shiraishi Shunpei and he works at the same company. They have dated for the past year. To marry him, Ukishima Tae pretends to act like a naive and shy person in front of him. Her real personality though is to speak frankly and making sharp remarks. Ukishima Tae wants to relieve her stress and she decides to purchase Setsuna Jun as her boyfriend. To pay off his debt, Setsuna Jun becomes an obedient boyfriend to Ukishima Tae.

Having replied to a wicked post on her school website, Ye Won keeps getting a threatening call from a boy named Ji Eun Seong. Having heard about him from her friend, she keeps running away from him. But they kissed accidentally when Ye Won was trying to escape from him. Having his lips stolen by Ye Won, Eun Seong threatens her to marry him, adding that no other girl has ever kissed him before. The only thing Ye Won can do is obey whatever Eun Seong says. At first, Ye Won just hates him the most for his self-righteousness and unreasonableness. But she gradually finds herself starting to fall for him.

After learning that his ex-girlfriend has a fabulous new boyfriend, Hyun Seung spends his nights wracked with insomnia and jealousy. Then one night, a phone call from a sexy stranger breathes new life into his gray existence. Even with her enviable looks and a successful boyfriend, Yun Jung feels love deprived. While attempting to spice up her relationship, Yun Jung resorts to giving her boyfriend a steamy phone call… only to find that the guy on the other end is someone else and she just can’t quit him!

**Story takes place one month before the movie.”** Akahane Yu moves to a dormitory room after her father's transfer at work. She and Haruto aka "Black Devil" have the worst meeting. Since then, Haruto treats her like his slave. The only person who is kind to her is Takumi aka "White Prince”. Haruto orders Yu to go to her middle school reunion, but Yu, who doesn't want to remember her middle school days, refuses. At this time, Suzune appears. She is a childhood friend of both Haruto and Takumi. Due to her, the relationship between Yu, Haruto and Takumi changes.

Akabane Yu moves to a dormitory room after her father's transfer from work. She is excited that she will live in the same dorm as Shirakawa Takumi aka "White Prince." Yet, Kurosaki Haruto aka "Black Devil" kisses her as punishment for going against him. It is Yu’s first kiss. Since then, she becomes obedient to Kurosaki Haruto.Akabane Yu moves to a dormitory room after her father's transfer from work. She is excited that she will live in the same dorm as Shirakawa Takumi aka "White Prince." Yet, Kurosaki Haruto aka "Black Devil" kisses her as punishment for going against him. It is Yu’s first kiss. Since then, she becomes obedient to Kurosaki Haruto.

After being dumped by her boyfriend just before their 100 day anniversary, Ha Young meets a college guy named Hyung Joon whom she accidentally hits in the face with a can causing him to scratch his Lexus. He demands she pay him $3000 on the spot, but she escapes, leaving her wallet behind. Hyung Joon, not satisfied with this, stalks her, demanding money to pay for his car. Since Ha Young is a poor high school student, Hyung Joon writes up an "Enslavement Agreement" to ensure she pays for the damage to his car. Through this agreement, Ha Young finds herself thrown into a nightmarish slave life for 100 days; cleaning his house, running his errands, doing his homework, even cleaning his car.

By accident, she discovers that the damage to Hyung Joon's car only cost $10, so she decides to take her revenge. However, before she knows it, Hyung Joon has shown up at her house as her new tutor! He once again takes advantage of her, but soon Ha Young finds herself falling head over heels for him. But what happens when he drops out of her life just when she needs him most?

"I was planning for us to stay just friends... but I'm not holding back anymore." I'm living with my childhood friend turned savage! My heart won't stop throbbing as each day passes and he just won't give up...!! After entering high school, Hiyori is finally able to fulfill her dream of living alone. Or so she thought... Her childhood friend Soushi is there waiting for her at her new apartment. He suddenly kisses her and Hiyori is unable to hide her confusion. Is he teasing her? Or is this for real...? For the first time, she begins to see Soushi, who she'd never paid too much attention to before, as a man. At the age of 15, Hiyori begins her radical, new life living with Soushi!