When his father remarries, Yuta Asamura winds up sharing a roof with his new stepsister, Saki Ayase, the hottest girl in his grade. Carrying the scars of their parents’ troubled divorces, they vow to maintain a respectful distance. But what starts as cautious camaraderie blossoms into something deeper from shared experiences. Is it admiration, familial love, or something more?

Alya is a transfer student enjoying popularity at her new high school, often sporting a cold shoulder while earning high marks in class. She ignores her nerdy classmate, Kuze Masachika, except for when she blurts out a flirtatious line to him in Russian. Little does she know, Kuze understands Russian, though he pretends not to. Let’s see where this wacky love story takes them!

A shady bus tour of young men and women are headed to an elusive village called Nanakimura. A destination where people can partake in an utopian existence, free of the world's obstacles... or so goes the rumor. Heading deep into the mountains, the bus is carrying 30 different individuals, each harboring their own expectations and troubled hearts... What they had arrived to was an uninhabited village with lingering, faint scents of life and it was falling apart. Just what is the secret of Nanakimura?

A.S. (Ad Stella) 122― An era when a multitude of corporations have entered space and built a huge economic system. A lone girl from the remote planet Mercury transfers to the Asticassia School of Technology, run by the Beneritt Group which dominates the mobile suit industry. Her name is Suletta Mercury. With a scarlet light burning in her pure heart, this girl walks step by step through a new world.

The city state of Lisvalletta. Two suns rise above this city, and the people here live peaceful lives, but in the shadows, crime and illegal drugs run rampant. Among them is the dangerous, highly lethal drug "Anthem" which casts a dark shadow over the city. The SEVEN-O Special Crime Investigation Unit specializes in cracking down on Anthem. This unit operates in two-man "buddy" teams in what's called the "Double Decker System" to tackle the problem. Doug Billingham is a seasoned investigator, and joining him is Kirill Vrubel, whose abilities are mysterious and unknown.

Natsuki Subaru, an ordinary high school student, is on his way home from the convenience store when he finds himself transported to another world. As he's lost and confused in a new world where he doesn't even know left from right, the only person to reach out to him was a beautiful girl with silver hair. Determined to repay her somehow for saving him from his own despair, Subaru agrees to help the girl find something she's looking for.

At the end of the second semester of third year of high school, four students are prepared for graduation and feel the ending to their high school life. But that changes a little with the arrival of a transfer student.