Following the grim events of Iga, Kokujou Island, Rakuyou, and multiple fruitless confrontations with the Tenshouin Naraku and Tendoshuu, Gintama.: Porori-hen takes its viewers on a trip down memory lane to when Yorozuya were mostly doing what they did best—odd jobs. The great space hunter Umibouzu has returned to Edo and is livid when he finds out that his daughter Kagura has a boyfriend. He blames Gintoki for being an incompetent guardian, but has the time finally come for him to let go of his daughter? Back with shameless parodies, risqué humor, and lively camaraderie, Gintoki, Kagura, and Shinpachi are faced with unforeseen situations that manage to be both hilarious and emotionally stirring. [Written by MAL Rewrite]

Shamisen is a traditional Japanese musical instrument that looks similar to a guitar. Teenager Sawamura Setsu's grandfather who raised him and his older brother Wakana, recently passed away. His grandfather was one of the greatest Shamisen players and the two siblings grew up listening to him play and learning to play the instrument. Since their grandfather's death, Setsu dropped out of high school, moved to Tokyo and has been drifting, not knowing what to do besides play his Shamisen. That's when his successful and rich mother, Umeko, storms into his life and tries to shape Setsu up. She enrolls him back into high school, but little does Setsu know that he is about to rediscover his passion for Shamisen. (Source: MU, edited)

At Fujisaki Girls Academy, student council president Natsuo Maki is the epitome of grace and perfection, admired by all the young girls who attend the school. One day, Riko Kurahashi walks into the student council room on an errand, only to discover Natsuo practicing her kissing techniques on a pillow, an act that is neither graceful nor elegant. Riko soon discovers that Natsuo desires more romance in her life, leading her to practice "romantic situations" in secret. Sympathizing with her, Riko agrees to help Natsuo with her love research. Named "Love Lab," the project practices the essentials of love and romance, such as bumping into each other "accidentally" and holding hands. Soon, the entire student council joins in on the fun in the Love Lab too! Through their research and real life encounters, what will they learn about romance? Weaving together funny characters and comedic situations, Love Lab builds a story of friendship and romance, while never missing a beat with the laughter. [Written by MAL Rewrite]

The second part of Nanbaka. The prisoners and their guards continue their comfortable lives at Nanba Prison. However, from the shadows emerges a new threat: Enki Gokuu, a person from Samon's past, who has mysterious goals of his own.