Leopard Hakusho
Ok. 2 couples - just browsed it so I'm not sure. 1st volume, and also the 1st couple, is about a host Aya. Aya wants to earn lots of money by being a host, but never going to bed with his customers, so he can slack off for the rest of his life. One day a business man, who had eyes for him for a long time - but Aya didn't know it, approaches him and buys him for a night. That night they end up having sex, cause Aya wanted to get more cash out of him, so Aya looses his virginity (if I remember it correctly). They end up as a couple in the end (the business man is seriously possesive). Form the 2 volume to the 4th volume is the 2nd couple. The story is about Aya's coworker Rinka, another host and a high school student on top of that..., and a sensei in that school. Rinka started to have troubles in bed, couldn't get a boner, until he got "owned" by his sensei. Never really readt till the end cause Rinka seems like a spoiled brat who plays around and I didn't like it - so I need to read it first.
Shounen No Kyoukai
Kaoru (alpha), Yuka (omega), Taiga (alpha), Rin (omega) Kaoru x Yuka - childhood friends, a couple (but not the fated couple) Taiga x Rin - just sex bodies Taiga's fated pair is Yuka and Kaoru's fated pair is Rin... Story: It's messed up at the beginning. It starts in a high school. They had a physical exam where they find out the second gender of the students. Yuka turns out to be an omega and his childhood friend Kaoru turns out to be an alpha. Yuka's buddies are mostly Betas but one of them, Taiga, is also an alpha. Taiga went into really bad rut and it affected other alphas too. Taiga tried to rape Yuka but Kaoru took his place and made a pair with Yuka. In the end Taiga finds out that omegas smell the same except the omega he's supposed to be in a fated pair with an alpha. At that moment he realises that Yuka is his fated omega but he doesn't go for it cause he has remorse of conscience. As an adult Taiga goes out with a younger omega dude Rin. But they are not a pair. One day Rin and Yuka meet at the hospital. Rin gives him some tickets to the restaurant he works at. Yuka goes there with Kaoru and Kaoru goes into rut. Turns out that Kaoru's fated pair is Rin. Now they are in this mess where Kaoru is in a pair with Yuka. Kaoru knows now that Yuka isn't his fated pair but he still doesn't want to leave Yuka cause they are childhood friends. Yuka got 2 and 2 together and knows that Taiga is his fated pair and Rin is Kaoru's fated pair. Taiga knew about his fated pair being Yuka all along and Rin is trying to get Kaoru. In the end Taiga bit Rin's neck - making them pair. So everything works out in the end - even though they're not fated pairs. Think I've read ch. 12. 5
Miwaku No Ringo