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Rika, omega, who got raped in the past, got bitten on top of that by someone whose face he doesn't know. Because of that, even though he can’t have sex with anyone else, his heat makes his body ache... In order to overcome such a cursed nature, he desperately acted like an alpha and was somehow spending his college life peacefully. However, one day, this person who had a memorable scent, saved Rika who got attacked by alphas while being in an unexpected heat.
Sakushima Nanao is an omega that enrolls to a boarding school. To earn some money for buying medicines, he joins a circle that sells the members' body to elite alphas within school. An alpha transfer-student, Ashiya Soushi bothers Nanao under pretense that he falls in love with him on the first sight. Soushi that is agitated by the mating period succumbs into the lust. Even though he doesn't wish for it, his body can't stop yearning for that heat! A love trap that tricks alpha-hater omega.
The omega Akari, whose heat period wouldn't come, even after becoming an adult, being despised by the family and called "useless". However, one day, an alpha, Shinji, appeared who wanted to be paired to someone like him. Shinji, who forced Akari to have a heat-like condition with a medicine, wants to fill up his desires inside many times. Akari's body , which should have been immature, is awakened indecently by Shinji.
Playboy omega Mahiro wants to live his life to the fullest before the onset of his first heat. When Mahiro discovers that the shy, awkward alpha Yoneya likes him, he decides to fool around with him. But little by little he begins to think Yoneya's personality is attractive. However, Yoneya is the son of an elite alpha family, different from the world which Mahiro inhabits.
Former general of the Empire, now a wanted criminal, accidentally fell into the trap that the hunter had prepared. Wait, isn't this hunter the little angel that used to follow me around? The Angel is ruthless, vicious and unscrupulous. The second day of meeting the strongest Alpha walking this earth has transformed me into an Omega with sweet pheromones.
50 years go, a virus sweeps through the world, wiping out all the omegas from the face of the earth. Rain, the sole surviving omega, lives his whole life hiding his identity - until he accidentally runs into Lukas. As the chairman of the facility that used to produce artificial omegas, Lukas has to produce an alpha heir in order to succeed his father's business. And while he has his mind set on winning Rain over, things don't seem to go smoothly.
Su Mu, male singer, gentle as water, is now paired with the dominative president Ning Ye of a large business group. The marking of pheromones puts both men's lives at stake.
There was never a time when they didn't like each other - Minato (Omega) and Jin (Alpha) have sworn to each other to become a "pair". However, when Minato was supposed to go into heat, the doctor reveals to him that the chance of him getting pregnant are close to zero... Minato is shocked that is seems like he's unable to bear a child! After all of this he separates from Jin and they drift apart.
Juheon left Kang when he was a lost 19 years old. Kang was wrecked by an unexpected imprint. The doctor said that the only solution was to find the person who had imprinted him, as soon as possible. Kang have been wandering for seven years, looking for someone, so that at last he could know, it was Juheon who tightened the leash that he couldn't unravel.
Kuga Tsukasa is the heir to a great company. One day at a party he meets a man who appears to be the heir to the Amou empire. Tsukasa is about to use him for his own gain, but without realizing it Tsukasa is already underneath him in his bed!
Kamiato Kara, Hatsukoi