More than a Married Couple, but Not Lovers.

Mixed up with another family's child as a baby, high school student Umino Nagi is finally meeting his biological parents. On the day of their meeting, he happens to encounter Amano Erika, a high school student at a prestigious and wealthy girls school. At her request, he's half-forced into pretending to be her boyfriend so she can avoid marrying her fiance....However, not only were they the babies who had been mixed up, they're also engaged to each other! The loving parents of both families officially recognize their engagement, and the couple begins living together. Nagi is in love with his classmate Segawa Hiro, and Erika is determined to rebel against her father, so the couple agree not to get involved with each other. The mixed-up and chaotic romantic comedy starts now! Note: The final two episodes were broadcast together as a one hour special

Miyazawa Yukino is the perfect student. Kind, intelligent, pretty and modest, it's unbelievable that such a person could exist. Little did everyone know Yukino's perfection was just a facade. An act to fulfill her desire for praise and admiration. Her life took a turn however, as a newcomer to their school Arima Soichiro topped the exam rankings. Arima is more than just intelligent, he's also kind, handsome and modest, an unbelievable person who can actually exist. Even worse luck, Arima found out Yukino's secret, blackmailing her to help him out. Their odd relationship soon develops into friendship and eventually into love. But can their love prevail through the many problems that come their way?

Renako Amaori is leaving her awkward and lonely junior high school life behind, determined to become a normal girl with normal friends in high school. Glamorous, confident Mai Ouzuka is Renako’s total opposite: wealthy, outgoing, and a literal fashion model. Against the odds, the two girls form an immediate connection. Renako thinks she may have found the best friend of her dreams…until Mai’s romantic confession sends her into a tailspin. Renako wants to prove to Mai that being BFFs is better than being girlfriends, but Mai is dead set on convincing Renako that they’re destined to be lovers. Let the love games begin!

High school student Saito Houjou is set to inherit his grandfather’s major corporation. First, he must marry Akane Sakuramori, the girl he despises the most, and who hates him just as much. The two are determined to keep their unexpected marriage a secret from their classmates. But as they begin their newlywed life, the distance between them starts to close.