The siblings Kashou and Shigure Minazuki enjoy the company of six catgirls. Chocola and Vanilla assist Kashou in his job as a baker at the patisserie La Soleil, while the others—Coconut, Azuki, Cinnamon, and Maple—accompany Shigure in her daily life back at their home. One afternoon, when Chocola goes out for an errand, she notices a green-haired kitten alone by herself at a park and decides to bring her back to the patisserie. Soon after, the Minazuki household adopts her and gives her a name: Cacao. With a new member in their family, the members of the Minazuki household continue their everyday lives—bound to become livelier than ever.

Years ago, a tragic incident befell a young princess when both her parents died. Devastated, it seemed nothing would calm this poor soul. However, a prince traveling through the area came to see the princess, hoping to cheer her up. After wiping her sorrowful tears, the prince gave her a ring carrying a rose emblem and told her as long as she holds onto the ring, they are destined to meet again. The event leaves a deep impression on the girl, Utena Tenjou, leading her to become a prince herself. Years later, Utena attends Ootori Academy, recognized by the same rose emblem as her precious ring's. There, attracted by the scent of roses, she witnesses Anthy Himemiya tending the flowers, accompanied by the Student Council President Touga Kiryuu and Vice President Kyouichi Saionji, who seem to be arguing over Anthy. While Utena thinks nothing of the occurrence, the Student Council gathers to discuss an important matter. Subsequently, a misunderstanding leads to Utena being dragged into the world of Duelists—those with rings similar to her own. The Duelists fight for the ownership of the Rose Bride, Anthy Himemiya, who is said to possess great power. Wanting to prove her capabilities as a prince, and enraged that Anthy is being wronged and objectified, Utena resolves to fight against the Duelists to save her from the cruel fate.

A human may become a vampire only if they fall in love with one—and 14-year-old Kou Yamori wishes for nothing more. Kou has decided to fall in love with a vampire named Nazuna Nanakusa, and he has only 10 months of nightly rendezvous left to realize his goal. Kou's friends, Mahiru Seki and Akira Asai, are slowly coming to terms with the existence of vampires and Kou's decision to become one. As Kou realizes that a woman close to Mahiru is a vampire, he is unsure whether to support this relationship. Meanwhile, Anko Uguisu, the human detective bent on killing vampires, closes in on Nazuna and her coven. When an encounter leaves one of the vampires seriously injured, they learn that their human memories hold the key to a weakness that can be their demise—and to protect Nazuna, Kou must find out about her past.

Rei Oohashi is a burned-out office worker by day but otome game heroine Rae Taylor by night. After her long workdays, Rei immerses herself in the world of her favorite dating sim, Revolution, as a student at Bauer Kingdom's prestigious Royal Academy. Instead of focusing on the male love interests, Rei obsesses over the romantic rival: the game's villainess, Claire François. One evening, however, Rei's exhaustion catches up with her and she passes away. When Rei opens her eyes again, she finds herself reincarnated as Rae and in the presence of her beloved Claire. Given this miraculous opportunity, she wastes no time declaring her love for the golden-haired villainess and her endearing attempts at bullying. Winning Claire's heart is no easy feat, especially as the game persistently throws the three male leads at Rae—but she has no intention of allowing the dating sim logic to come between her and the one she truly loves.