[Gintama] The Girl and the Void

The rules of the ancient tomb A woman must receive the cinnabar mark and swear never to leave the tomb for the rest of her life. If a man who knows nothing of this rule is willing to die for her, she may break her vow and descend from the mountain. But what if he doesn't die? The female lead is the apprentice of the Yellow-Clad Maiden of the Ancient Tomb Sect. The male lead is the reborn Xu Da Da. I felt so sorry for Xu Da Da while reading the Gintama manga, so I decided to dig a little short-story hole for him. Theme: