Fifteen years have passed since the war between humans and demons began. Dissatisfied with their slow advance into the Demon Realm, the Hero abandons his companions to quickly forge ahead towards the Demon Queen's castle. Upon his arrival at the royal abode, the Hero makes a startling discovery: not only is the Demon Queen a woman of unparalleled beauty, but she also seeks the Hero's help. Confused by this unexpected turn of events, the Hero refuses to ally himself with his enemy, claiming that the war the demons have waged is tearing the Southern Nations apart. However, the Demon Queen rebuts, arguing that the war has not only united humanity but has also brought them wealth and prosperity, providing evidence to support her claims. Furthermore, she explains that if the war were to end, the supplies sent by the Central Nations in aid to the Southern Nations would cease, leaving hundreds of thousands to starve. Fortunately, she offers the Hero a way to end the war while bringing hope not only to the Southern Nations, but also to the rest of the world, though she will need his assistance to make this a reality. Finally convinced, the Hero agrees to join his now former enemy in her quest. Vowing to stay together through sickness and health, they set off for the human world. [Written by MAL Rewrite]

It is business as usual in the massive city of Orario, where legions of adventurers gather to explore the monster-infested "Dungeon." Among them is the easily flustered yet brave Bell Cranel, the sole member of the Hestia Familia. With the help of his demi-human supporter Liliruca Arde and competent blacksmith Welf Crozzo, Bell has earned the title of Little Rookie by becoming Orario's fastest-growing adventurer thanks to his endeavors within the deeper levels of the Dungeon. Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka II continues Bell's adventures as he tries to bring glory to his goddess and protect those he cares about. However, various familias and gods across the city begin to take notice of his achievements and attempt to add him to their ranks. [Written by MAL Rewrite]

Chuukan Kanriroku Tonegawa is a spin-off of the Kaiji series, which follows Tonegawa, the right hand man of Kazutaka Hyoudou, the president of the Teiai Corporation and owner of numerous gambling tournaments. After Hyoudou is getting bored with his life, he orders Tonegawa to organize a so called "game of death" as it is his and his subordinate's job to keep the president in a good mood. Tonegawa must cooperate with his subordinates in order to make the president happy and what follows is a humorous story of his interactions with his subordinates and other characters of the Kaiji series. (Source: MAL News)

Lupin and Jigen planed to steal enormous money from a racetrack in New York. Their plan is perfect and the only thing remains is to wait for 6 days. To celebrate the success beforehand, they go to a town. 

Lupin parts from Jigen because he recalls another engagement. Then, Lupin saves a girl, Michelle, being chased by suspicious men. She asks Lupin to steal a diamond from her father in order to stop him from doing evil things. Lupin thinks he can get both money and a diamond 6 days later, and he accepts her request to guard her for 6 days. 

Meanwhile, Jigen meets his old fellow soldier, Ryatte, and they’re talking about another business. Then, Jigen is supposed to spends 6 days with Ryatte before the plan with Lupin. On the other hand, Fujiko and Goemon are planning to steal a diamond at a diamond exhibits. The host of the exhibition is… 

(Source: AniDB)