The period is Kamakura, the age of onmyoudo and monster parades. A child appeared in the shrine by Lake Biwa, Kumou Shrine, asking for help.

And then, it's finally time for those two.

This is Hirari and Botan's story, finally completed.

A story following after Donten ni Warau Gaiden with connection to Rengoku ni Warau.

Weak Beings. They are called Vampires.

Set during the time of Taishou democracy. Four men are infected with the vampire virus. Their bodies are weak to sunlight, with low tolerance to strong odors, and can only consume blood. The weaknesses of these frail vampires will be compensated through the use of modern technology! The vampires, who are under the government's commands, soars above the Imperial City tonight!

Adapted from the musical stage play reading by Fujisawa Bunou.

Lonely Mitamura may be a teacher at the exclusive Sheol Soul School – an academy dedicated to the afterlife – but he has a lot to learn about human emotions and helping others. In fact, his star pupil Tsuru thinks she’ll teach him a little lesson by running off during a field trip in the living world. Now, Mitamura has only seven days to track Tsuru down with the help of a brand-new (deceased) sidekick. Will the clock run out before they find her?
-DMP

From Bliss: While trying to find a job, Manji, a for-hire bodyguard, also known as "Akainu (Red Dog)", meets Karu who works for "CARDS". Discovering that Karu's mission is to exterminate the deadly "TOYs", which mindlessly attack any living things, Manji can't help but forcefully tag along to relieve his boredom... Edit: Officially a Shoujo manga, though the artwork and action seems to differ.

Alternative world where Japanese culture kept its ground to this day and further. Protagonist, a female entertainer typical to Japanese traditional customs, finds herself swept into the world oh so familiar, and yet so different from the one she lived in so far.... a world where she has to fight to survive.

In the eleventh year of the Meiji era carrying swords was forbidden by the government and those known as samurai were slowly fading away. However there were plenty that didn’t like those changes taking place in Japan and inevitably the crime rates increased. Japan’s only resolve was an inescapable lake prison. While the prison had no other way to access it but only through water, the 3 boys of the Kumo family were assigned to transport the criminals to their new "home". Although... is that the only thing they were doing...?

The battle with Orochi took place at Lake Biwa, the largest lake in Japan, during the Tenshou Period -- 300 years before the events of Donten ni Warau. This is the story of that battle.

From Easy Going Scans:

"Year 252 M.C, in this era which plants are almost extinct and the land is barren, a strange disease developed. 'Shinigami's flower,' the unique lethal flower that carries death." The disease is curable if found in the early stages but if left till transformation stage it becomes lethal and the only option left is extermination. These are all dealt with by request to 'Gokurakuen,' the national medical institution specializing in dealing with shinigami's flowers.

Our protagonist, Doctor Ichinose Souma, is the class representative of Mobile Team Unit Class 1. As his class gets too few requests, he and his assistant Hina often get into trouble interfering with other class's jobs.

Includes stories not told in the original manga -- some from the past and some from the future.