If you're looking for anime similar to Warau Ishi, you might like these titles.
Clumsy, good-natured Saya lives a happy life surrounded by her classmates, her admirers, and the loving guidance of her father, the priest of a shrine. But mysterious, bloodthirsty monsters have begun to appear, and as the daughter of the shrine, Saya is tasked with keeping the village safe – even if it costs the girl her life. Now, between her schoolwork and friendships, Saya must pick up the sword and keep these brutal creatures at bay. Will Saya be able to return to the quiet life she once knew?
Michiru has an unusual ability: she can see a dark ring around a person's neck that signifies their time to die. However, she suppressed her powers once she "saw" the deaths of her parents – until now. After accidentally seeing rings around the necks of two boys in her school, it seems that Michiru's powers are back for good. The two are zombies who are working for the secret loan office known as Zombie-Loan, and they need Michiru's help to find other zombies – those with dark black rings around their necks. Though Michiru initially refuses, due to a series of events it seems she has no choice but to comply...
Between August and October, 1952, a series of unusual crimes takes place in Musashino and Mitaka: the attempted murder of 14-year-old Kanako Yuzuki, Kanako's abduction from the strange research "hospital" where she was recovering, then abductions of other girls, followed by their severed limbs in custom-fitted boxes being placed in surrounding towns. News editor Morihiko Toriguchi and crime fiction writer Tatsumi Sekiguchi investigate with the help of onmyōji Akihiko Chūzenji.
A high school girl, Kuroi Misa, is invited to a high class Japanese style hotel by the owner. What he is worrying about is that the customers continuously killed themselves by hanging themselves in the garden. Misa is invited to dispel the spirits in the garden. There used to be an execution ground there. Misa proposes to use black magic to dispel the spirits, and she demands 10 million yen.
The moment the red moon appeared in the sky, everyone went crazy. except for me!
Kanazawa Nobuaki has transferred to a high school far from where he used to live. Due to an incident at his old school, Nobuaki is afraid of getting close to his new classmates and keeps himself at a distance, but he starts opening up because of a sports day inter-class relay. Then, a single text message from someone calling themselves the "King" is sent to everyone in class. Nobuaki’s classmates think it's a simple prank, and don't take it seriously but Nobuaki knows that a death game is about to begin, and struggles to oppose it...
Kaihe is a high school student who has been given the task of becoming the chairperson for St Luminous, a private religious school for girls, after his grandfather died. Kaihe, along with a friend, arrives at the school to take care of business. But soon, mysterious disappearances start to happen. Will he unravel the mystery of the school and its past before its too late?