Following his legendary father-son battle against Yujiro Hanma, Baki faces a new threat: the resurrection of Japan's greatest swordsman, Miyamoto Musashi. As warriors like Doppo Orochi, Jack Hanma, and Kaoru Hanayama return to the fight, the stage is set for an unprecedented clash the strongest underground fighter vs. the legendary samurai, in a cross-era showdown.

Robotic OrderMaids are popping up in every household, and 10-year-old Bondo Taira has found out that his two closest friends—Motsuo and Gachi Gorilla—have OrderMaids too. Motsuo, in particular, owns Meico, a beautiful robot that gives excellent massages and serves drinks with a smile. Jealous of his friend, Bondo convinces his mother to get him an OrderMaid, hoping for a similar experience. However, to Bondo's surprise, the maid that appears outside of his door is incredibly muscular and clumsy enough to destroy a house when completing simple chores. Going by the name Roboko, this new robot is the exact opposite of what Bondo wanted. But despite that, Bondo, together with his friends, learns that there is more to Roboko than they could ever expect.

Seiran Island is a tropical eden where wanton sex acts are encouraged under local "pervert law." But even in this paradise, some prefer to remain celibate. There's the lesbian younger sister who would secretly bone her brother... The classmate everyone has labeled as a wild slut... The tiny upperclasswoman, so petite that guys think she's off limits... The shy girl who's a bit self-conscious about baring some skin... And here I am, a guy with a "huge" complex about his "little guy." Despite this, we form the anti-copulation front: No Love, No Sex! As its founder and head honcho, I, Junnosuke Tachibana, will not stop until we have abolished this ridiculous sex law for good! I've even stumbled upon a generous soul in this mysterious, wealthy gentleman whose name remains a mystery... He's already set us up with a secret hideout and a tonne of money. In exchange, he asks us to find someone and "protect her at all costs." So, she has the key to our mission's success...? In this case, there's only one thing to do: find the mystery girl. And all while keeping the SHO off our trail,... Oh, and we also have to keep our virginity intact. Make no mistake! Just wait and see! I'll repeal that perverse law!

After waking from a long cryogenic sleep, high school student Akira Himegami finds himself in a world he no longer recognizes. The city lies in ruins from war, society is now governed by an organization called OWEL, and traditional marriage has been replaced by a new system known as "Elsie." As Akira struggles to comprehend this drastically changed future, a familiar figure appears before him—Yuugure, who bears a strong resemblance to his girlfriend Towasa. To his shock, Yuugure smiles gently and proposes: "Akira... please marry me." Confused by her sudden proposal, Akira agrees to travel with Yuugure, holding onto hope that somewhere in this world, the real Towasa is still alive. Along their journey, they encounter the evolving forms of love in this new era and reflect on what their bond truly means.