Ryuuichi Manga Gekijou: Onbu Obake

Tired of writing riddles for children, Yamaoka Momosuke plans on gathering spooky and gruesome stories and publishing them in an anthology called Hyakumonogatari ("One Hundred Tales"). While researching these old myths and legends he comes across a mysterious trio who call themselves the Ongyou. They are detectives who are investigating the legends to reveal their truths...and bring those in the wrong to justice. Each time Momosuke meets the Ongyou he must face horrible truths and battle with his morals, but he's seeing things he shouldn't be seeing...

Adaptation of the monster picture book by Hiroshi Saitou and Etsuyoshi Miyamoto. The Obake Zukan series illustrates various monsters and spirits and explains why they are scary.

After the death of Saizou, Kabamaru's horribly strict grandfather and Iga ninja teacher (sensei), an old lady, Ran Akoko, claims that she received a letter from him asking her to take care of his grandson. So Kabamaru runs off with Lady Akoko to the big city Tokyo to gorge on yakisoba, ramen, chow mein, and attend a regular school—which turns out to have weird quirks of its own.

Masahiro is the grandson of the great onmyouji, Abe no Seimei. However, he lost his sixth sense that enables him to see supernatural beings, which is very important for an onmyouji. Thus, he is left with no choice but to try and pick a different career. But one day, a strange mononoke appears, which he names Mokkun, who shows him his true potential powers after fighting a demon. With the assistance of Mokkun, his quest to become the greatest onmyouji begins.