If you're looking for manga similar to Bonkura Onmyouji no Oniyome (Light Novel), you might like these titles.
She's not looking for a future husband... She's never even been in love. So how did she end up entering a contract marriage with the greatest catch ever?! Mitsuru, a woman in her thirties whose only interest is cats, and Kugayama, a hot pediatrician fed up with shallow women constantly flirting with him, have decided to get married for mutually beneficial reasons. On their wedding night, to Mitsuru's surprise, Kugayama sneaks into bed and affectionately beckons her to pet him. Imagine her reaction when he springs furry ears and a tail! Mitsuru's "night of passion" with her new husband takes a strange turn. Thus begins a warm and fluffy romantic comedy about a not-so-standard, newly married couple!
Despite the nine-year age difference between Koki and Kisa, the two get along surprisingly well. After receiving pressure from both of their mothers, they make a spur-of-the-moment decision to get married (without telling their moms that they've never even dated). The idea of them growing into their marriage sounds rather romantic... but the marriage is actually more like a contract! Kisa's never had a boyfriend and Koki's a total player. Will their marriage work out!?
Want to go an exorcism trip? B class exorcism that forces the target to go all the way to C... Climax Exorcism. An obscene ability that forces anyone struck by it to climax, regardless of whether they are living or dead. As a bonus, it also forces evil spirits and monsters to ascend to heaven. This is a world where evil spirits and monsters are everywhere and being an exorcist is a real job. From among promising boys and girls, those with talent are trained at the “School for Exorcists”. Furuya Haruhisa is a boy cursed with the ability, climax exorcism, and is also the school dunce. Using the ability could lead to his social death… but then, Haruhisa meets Soya Misaki, a girl who possesses a similarly cursed pair of eyes–demon eyes that can effortlessly reveal people’s secrets...
Taichi, who has been freeloading off his girlfriend, gets dumped and has no choice but to go back to his parents' house. The person who knocks on his door is his childhood friend, Ryousuke, who grew up to be a handsome man. After they met again for the first time in years, Ryousuke suddenly proposes to Taichi. Confessing that he has always loved Taichi since they were kids, he requests that they apply for Provisional Marriage ー a system where couples can try being married for a maximum of six months.Despite being overwhelmed by Ryousuke's intense feelings, the words "you don't have to do anything, so just be with me" lure him in. Taichi agrees to the provisional marriage like he's just agreeing to be roommates, but then...?
When Guan Xin Mu was rejected by Xia Yu, her long-term crush, Fei Jun which she called Shu Shu comforted and accompanied her through her heartbroken days. When Fei Jun’s dad was in critical health condition, his one wish was to see him married and had a happy life. Having no girlfriend at the moment, Fei Jun proposed to Guan Xin Mu to be his wife. So then begin their marriage life, can their arranged marriage stand strong through problems that are waiting ahead? Can this marriage heal Guan Xin Mu’s broken heart? And make her fall in love once again?
Shinobu is a school girl that possesses the powers of an exorcist. She lived with her grandfather, who has died. leaving his church to her. It was her grandfather that helped her control her power in order to use it in service to the church. Now that she is alone, an uncertain future is before her. But wait, the new transfer student, Rihito Konoe, suddenly declared that he is a disciple of her grandfather's and that he will be aiding and protecting her. What is strange is that she doesn't remember her grandfather having a disciple. Who is this person really?
Yuriko, an asexual woman, agrees to take a husband to satisfy her parents—which is how she finds herself tying the knot with Gakurouta, a gay man in love with his childhood friend with his own complicated family circumstances. And so begins the tale of their marriage of convenience.
In the world of the Exorcist Underground, the fourth grader Hibiki summons Shikigami to fight for the safety of mankind. Along with being a normal schoolgirl and battling dangerous spirits called Ayakashi, Hibiki has also been tasked with finding six magical jewels that will make her the next leader of the Exorcists! But with fumbling friends, giant evil spiders, and fanatical rivals, it looks like her quest will be less than easy...
Eiji Ando is taking over his family business of being a "Shureishi" or simply an exorcist. Unbeknownst to him, the REAL purpose of his family tradition is to use spirits (which they keep as 'pets') to take over women so that the shureishi can mate and produce offspring! What happens is the female characters get possessed by the spirits and when they leave the body, Eiji needs to have sex with them in order to completely rid her of the bad aura (or supernatural residue).