Third part of the Baki series. After overcoming countless intense battles with powerful enemies, the time is finally ripe for Baki to face his father, Yujiro Hanma, who is said to be "the strongest creature on Earth." Before this battle, Baki chooses Biscuit Oliva also known as Mr. Unchained as an appropriate sparring partner. Oliva is currently incarcerated in a prison called the "Black Pentagon," home to only the most violent criminals. In order to fight Oliva, Baki gets himself imprisoned in the Black Pentagon. However, in addition to his desired sparring partner, a number of terrifying fighters also await him here.

The Man-Killer Virus: a lethal disease that has eradicated 99.9% of the world's male population. Mizuhara Reito has been in cryogenic sleep for the past five years, leaving behind Tachibana Erisa, the girl of his dreams. When Reito awakens from the deep freeze, he emerges into a sex-crazed new world where he himself is the planet's most precious resource. Reito and four other male studs are given lives of luxury and one simple mission: repopulate the world by impregnating as many women as possible! All Reito wants, however, is to find his beloved Erisa who went missing three years ago. Can Reito resist temptation and find his one true love?

It was the best of times, it was the worst of times. —— Dickens《A Tale of Two Cities》 I took my hatred and plot for revenge with me down the mire, to the depths of the abyss, and returned as a ghost of the past. I want to plant the seeds of the rotten truth, nourish their deadly thorns with fresh blood so that they grow and pierce through this civilization built on lies. I reached the bottom of the abyss…only to find a shining star.

The manga is centered around an older woman who is often mistaken as a man and called "Ojii-chan'' by her cats and Tsushima, a strange cat who appears in her garden one day. (Source: MAL News)