In 199x, the world was engulfed in the blaze of nuclear war. With the Ocean drying up and Earth torn asunder, all life seems to be lost but humans survived stubbornly. However, what dominated the post-apocalyptic world was sheer violence. The remaining humanity was split into two groups: those who kill and take whatever they can and those who are exploited. When all hope seems lost for the weak, a man in ragged cloth appears. He is Kenshiro, the rightful successor of the Hokuto Shinken martial arts with seven studs-like scars in the shape of the Big Dipper. His journey to becoming a legendary savior begins!

Maria, the daughter of a duke, grew up believing she would one day inherit her father's dukedom. Accordingly, she focused her attentions on honing her martial arts prowess, while thoughts of marriage fell by the wayside. But the arrival of a baby brother in her family means she's losing her role as heir! Now that she's decided it's time to marry after all, she's arrived a little late to the game! Are there even any eligible bachelors left? Upon going to study abroad in a neighboring country where she might still stand a chance at getting hitched, she's bewildered when the crown prince there declares before all that his engagement to her is null and void! Wait... what engagement?! Apparently, he's mistaken her for the wrong girl! But once that's all cleared up and he catches sight of her knocking out a whole pack of bandits, it turns out that this prince may have a thing for ass-kicking young ladies after all.

We all have embarrassing memories or deep regrets from high school, right? Socially anxious college senior Natsuki Haibara sure does. When he thinks back on that time of his life, all he has are fleeting fantasies of a happy adolescence that could have been. Imagine his bewilderment and surprise, then, when he inexplicably finds himself seven years in the past—one month before his first year of high school! Can Haibara avoid his previous mistakes, make his way to the top of the school social pyramid, and end up with the girl of his dreams? Or will he be forced to relive three years of solitude as the most hated guy in school? He'll need all the help he can get in order to succeed, from a workout regimen to online how-to guides, a childhood friend, and plenty of sheer willpower. Watch as Haibara takes a second shot at his teenage years!

The Royal Diana Academy is a prestigious school that accepts individuals with adept magical abilities. Upon graduation, these students find themselves at the top of their field or employed by the royal family. Spica Virgo dreams of studying at the academy, aiming to be a top-rate sorceress like her idol Claude Sirius. Claude is a world-renowned sorcerer who became the institution's youngest instructor, but mysteriously disappeared soon after. Lacking the experience and connections required for admission, Spica finds herself unable to make meaningful progress with her training. One day, however, she meets a talking black cat with magical abilities. Hoping to change the situation for the better, she begs the animal to take her as his apprentice and teach her the magic she needs to attend the academy. The cat accepts the deal on one condition—she must find a way to reverse his feline curse. Despite the arduous challenges ahead of her, Spica is determined to prove herself as a student worthy of the cat's mentorship.