Haru Mochizuki was ostracized as a child for being an omega, but he was "rescued" by Renji and Eiji Ichijou, two alpha brothers who vow to take him away and protect him. Renji is certain that he and Haru are a fated pair and promises to take him as a mate when they become adults, but years later Renji has disappeared and Haru, believing himself abandoned, has started dating Eiji instead. Eiji is engaged to be married, however, and Haru always seems to come in second place.

Souta is a brilliant and handsome but disingenuous alpha and is in love with Haruto, his childhood friend. He doesn't want anyone else to have him and wants to start a family with him one day. He lies to his very innocent and gullible friend and sleeps with him every night to mark his territory. But one day, they have a fight because Haruto finds out that Souta has been lying!

Ryou Saitou is a rowdy delinquent obsessed with getting into fights. One day he meets Asuka Fujisaki, an innocent underclassman who wishes to become his pupil. Asuka looks at the fearless, belligerent Ryou with stars in his eyes, but lurking behind that facade is a desire to take revenge on him! "Now it's my turn to turn you into a girl." A scheming, deceiving underclassman versus an unyielding delinquent!

Meeting one's fated pair is something many alphas and omegas dream of, but not everyone is guaranteed a happy life with their destined partner. Some never encounter their fated pair at all, others refuse to even acknowledge that such a bond exists; and some, tragically, are unable to be with their soulmate even after they meet them. Childhood friends Kaoru and Yuka already have a strained friendship, and they find their lives spiraling out of control after their secondary genders are revealed.