Stories about rich people and their butlers.
1st couple: Alpha (Jirou) x Omega (Aoi). Two people who have known each other since they were children. Immediately felt the "soul bond" but refused to accept their destiny. Aoi, after his parents died, became a commoner and started working as a butler in Jirou's household. With the support of his ever caring butler Miyauchi, he was able to learn. Despite Jirou's hatred they end up getting tied with one another since they can no longer deny their fate. They ended up getting married and having twins.
2nd couple: better and longer story about Miyauchi (Aoi's butler, Beta) and Kudou (Jirou's butler, Alpha). Started off as a hate relationship. Both of them had a horrible past that involved sexual abuse (and child abuse for Miyauchi) so they formed hatred for Alphas and Betas. They started off when Miyauchi had to relieve Kudou when his heat got triggered because of Aoi's heat. Kudou slowly delevoped feelings for Miyauchi but since Miyauchi had a dreadful past it took a while for him to open himself up to Kudou. They ended up getting married and having a child despite of Miyauchi being mostly infertile.
Kashikomarimashita, Destiny