Happy Kanako's Killer Life

Karin Oriyama, 16 years old. She is in high school and... she's about to get married!

An unemployed man learns that his ex-girlfriend was murdered. He suddenly finds himself travelling through time to his middle school years and has chance to change the future and save the girl. He aims to rise to the top of the most brutal delinquent gang.

Children from influential families in politics and businesses attend the Hyakkaou Private Academy. There, the hierarchy of the students are classified by a series of games. Students that win the games are on the ruling side and the students who lose become slaves. One day, a mysterious girl, Yumeko Jabami (Minami Hamabe), is transferred to Hyakkaou Private Academy. She looks pure and pretty, but she is actually a compulsive gambler and seeks out the thrill of taking calculated risks.

Hyakkaou Private Academy. An institution for the privileged with a very peculiar curriculum. You see, when you're the sons and daughters of the wealthiest of the wealthy, it's not athletic prowess or book smarts that keep you ahead. It's reading your opponent, the art of the deal. What better way to hone those skills than with a rigorous curriculum of gambling? At Hyakkaou Private Academy, the winners live like kings, and the losers are put through the wringer. But when Yumeko Jabami enrols, she's gonna teach these kids what a high roller really looks like!

Midori Asakusa wants to create an anime, but she's too disheartened to make that first step by herself. By pure chance, she meets Tsubame Mizusaki, an up-and-coming socialite secretly dreaming of becoming an animator. Together with Midori's money-loving best friend Sayaka Kanamori, the energetic trio start the "Eizouken" club and slowly work towards making their "greatest world" a reality.

Asahi Tojima (Nanase Nishino) is a first grade high school student. She is small and weak physically. Asahi Tojima decides to change herself. She enrolls in the naginata (Japanese blade) club at her school. She works hard with the other club members and targets the national competition.

Doi of the Maeda Construction Company's Advertising group has little passion for his work. One day the group's leader Asagawa declares, "Let's build the hangar for Mazinger Z!" Having been dragged in by Asagawa, Doi and his co-workers commence putting on appearances of having taken on this request from a fantasy world.

In the spring of a new semester, a "ranking" is sent to Class 2-D. It clearly shows the rankings of all the students and the homeroom teacher. The one who ranks 1st is Himeyama Tsubaki, a kind and popular honor student recognized by everyone. But one day, without any warning, she commits suicide. A few days later, everyone in the class receives a suicide note from Himeyama, and from that day on, the class begins to fall apart.

A group of strangers come together to work on creating the greatest anime series ever.

Osomatsu ends up meeting the CEO of a multi-trillion yen company, who wants to adopt Osomatsu as his own. The other brothers find out and they can't let that slide without a fight.

Driven by a single-minded determination to protect his friends and save Hinata, Takemichi Hanagaki enters a gang war with the hope of altering the course of fate and creating a better future for everyone.

Hinata is murdered again by the Tokyo Manjikai Gang in front of Takemichi. In order to save Hinata, Takemichi travels 10 years back in time again. Takemichi has to change a key case that can save Hinata. The key case involves a sad incident that occurred to 6 men, who later formed the Tokyo Manjikai Gang.

Toriyama Yukina is finally in at the university of her choice to major in science. She studied hard to get in. The school is not exactly as she had imagined however. She has a crush on Kei and is motivated to join the man-flight club as a result, which competes in the contest of that same name. Obviously Yukina wants to buddy up with Kei, alas it may not be happening.

A school appears peaceful from a distance, but a fierce gambling battle takes place once again. Yumeko Jabami is involved in the battle.

Hatori Matsuzaki is a female high school student. She has a crush on her childhood friend Rita Terasaka and believes he will eventually choose her as her heroine, but Rita Terasaka begins dating Miho Adachi. Meanwhile, the most popular male student, Kosuke Hiromitsu takes an interest in Hatori Matsuzaki.

Genki Ogasawara enrolls in an all boys high school. He then sets out to become popular with girls and looks for a club to join at school. Genki then comes across a performance of "Romeo and Juliet" performed by the school's drama club. Genki falls for the lead playing Juliet and decides to join the drama club. Genki isn't aware that the drama club is about to be shut down and that the person playing Juliet is actually a senior male student in drag.