A young boy with a troubled home life becomes "chosen," and he stumbles into the middle of a great war of yōkai (a class of mythological creatures), where he meets a group of friendly yōkai who become his companions through his journey. Now he must fight to protect his friends and free the world of the yōkai from oppression. The yōkai originate in Japanese folklore and range from the cute and silly to the disturbing.
住在東久留米的普通小學生上原康一，在暑假前一個下雨天的放學回家路上，因為跟同學互相嬉戲不小心弄掉鞋子到了河川。找到鞋子並去穿鞋時，兩次被同一個石頭絆倒，憤而挖起石頭丟向牆壁、從碎掉的石頭裡面掉出了像是烏龜的化石奇怪東西。於是康一在撿回來並且用水沖刷後而變色、不久石頭開始動彈，原來是河童。河童因為第一聲發出「酷」的聲音而被用來命名為小酷。在江戶時代，小酷的父親被武士所殺後，由於大地震讓地殼分裂使他被卡著關在石頭裡面三百年。上原一家決定讓小酷秘密住在家中。之後回復精神的小酷、說出想要回到舊居「龍神沼」、但被康一他們說「外面太危險」而說服了小酷。小酷也決定在康一家再住一段時間。
When a Babylonian vampire comes to old Japan, an army of Japanese demons and ghosts gather and battle him.
When military experiments go haywire and trigger an atomic bomb, the consequences are of epic proportions. A monster arrives in the midst of the nuclear fallout, and Japan's defenses are helpless against it. Mankind's only savior is an irradiated water goblin from Japanese folklore called the "Death Kappa." The two rival monsters must go head-to-head in the ultimate battle between good and evil!
Asuka, a woman in her thirties, works in a lakeside fish factory. She’s about to be married to her boss, Taki. But one day, she encounters a kappa – a water sprite found in Japanese folklore – and learns that the creature is in fact the reborn form of Aoki, an old crush who’d drowned to death when they were 17.
A kappa village is devastated by a large storm during festival preparations. With no fish in the river, the village is weakened. Kawatarou and his girlfriend head the mountains to find anything to bring back.
A new posted video was delivered to Ichikawa. A couple fishing in a pond captured a strange creature that emerged from the surface of the water.
Adapted from Shigeru Mizuki's classic manga from the 1960s, 'Kappa no Sanpei', the anime tells a story of a young boy, Sanpei, who lives in the beautiful countryside with his grandfather. One day, he is caught in the muddy streams of the river and wakes up in the land of goblins. Sanpei makes friends with a goblin named Gartaro, who bears striking resemblance to himself. Thus, the adventure begins.
From this popular series that counts 37 works, the 6th compilation of episodes carefully selected by the staff.
Spin-off short story of the "Senritsu Kaiki File Kowasugi!" series, which is set after FILE-03.
As famous photographer, Yuta Suzumori's (Tatsuya Fuji) health is worsening he tells a childhood story of when he saw a kappa in his hometown village of Kitagawa.