Da Shu is a a manga creator who grew up in an orphanage, and whose works do not sell very well. Da Shu lives each lonely day in boredom, but one day he meets a young man named Miao who has cat ears, and his everyday life completely changes. Miao gets in trouble every day, but for the first time in his life, Da Shu's heart experiences warmth. (Source: ANN)

Fresh out of college, Kawase Mitsuro is eager to start his new job as a middle school art teacher. Upon his arrival, he quickly blends in with the masses of girls ogling the toned body of senior teacher Kazama Toshiaki. Kazama ignores the schoolgirls. However, Kazama realizes something is different about Kawase and decides to ask the latter out to dinner. Unconvinced his advances are serious, Kawase goes along with Kazama halfheartedly. When Kazama's true feelings are revealed, will Kawase embrace his potential lover or give in to the expectations of society?

Cheng Ke has lost everything. Coming from a privileged background, he now has to search through trash to find his missing possessions. When one of his frustrated outbursts results in him being punched in the face, Cheng Ke finds himself unfortunately acquainted with terrifying gang leader Jiang Yuduo. Circumstances lead to Cheng Ke becoming a tenant at a new apartment—which just so happens to be rented out by Jiang Yuduo. Cheng Ke's inability to complete even the most menial tasks forces him to overly depend on his landlord, and as a result, the two form an indescribable bond. However, there are darker forces at play in the lives of both Cheng Ke and Jiang Yuduo. The two men are haunted by the pasts they left behind, and meanwhile, danger lurks around every corner. With mysterious figures following their every move, gang wars raging in the streets they walk on, and enemies itching to bring them down, Cheng Ke and Jiang Yuduo must always have each other's back.

High school student Misaki Takahashi returns home to see his older brother being fondled by an unknown man. Bewildered by such a sight, Misaki finds out that the stranger is actually Akihiko Usami, a popular novelist and his brother's best friend. With the two of them slowly becoming acquainted, Akihiko ends up as Misaki's private tutor. However, after stumbling upon the author's latest boys-love novel, Misaki becomes uncertain whether or not to trust Akihiko regarding his friendship with the student's brother. Elsewhere, Hiroki Kamijou, a university teacher of classical literature and Akihiko's friend, is grieving a failed romance. While on the edge of a mental breakdown, he meets student Nowaki Kusama, who wants his help for an upcoming exam. Despite denying Nowaki's request numerous times, Hiroki eventually lends him a hand. As the two get closer, more revelations about the student are made. Furthermore, when wealthy teenager Shinobu Takatsuki finds out that his older sister has divorced Hiroki's coworker You Miyagi, he immediately wants to date the same man—as he saved Shinobu from a robbery three years prior. Even so, You does not feel the same way and attempts to scare him off. However, the educator soon realizes that Shinobu will do anything for their destined romance. Junjou Romantica collects three love stories, narrating every couple's romance.