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妖怪人間ベラ〜Episode 0〜
在电影《人形怪物贝姆》中，角色“人形怪物贝姆”被设定为女高中生，主角新田康介在遇到贝拉时会发疯。 前一天的电视剧《妖怪人间贝拉-第0话(零)-》是一部揭开女高中生贝拉诞生秘密的悬疑恐怖片。 主角是在一次事故中失去了最好的朋友佐佐木幸枝的大野诗织。 当她遇到作为转学生来上课的梅木坂贝拉时，她发现她还有一个Kozue拥有的万花筒钥匙链，并决定在她身上看到Kozue的影子。 诗织意识到与贝拉交往时内心深处的黑暗高中女生会崩溃，并开始谈论学校在心身医学方面的状况。
Umenokisaka Bella comes to the class of Ohno Shiori as a transfer student. The classmates are interested in Bella's looks but she doesn't respond to them at all. Angry with her attitude, they decide to bully her.
The next day, Shiori is shocked to see that Bella, who fell from the rooftop in front of her, is fine. Ayane is forced by Kaoru and Rin to steal in a downtown area at night but Bella appears before her.
Rin hides her secret social media account from everyone, but that doesn't stop her from obsessing over the number of followers her account has. After the numbers drop, she gets desperate to increase them.
Rin manages to recover her number of followers but is outed as the owner of the account. She is shunned but sticks to the account regardless.
Nanami, an idol, is given a lot of affection by her mother. However, she is in love with her manager and wants to retire. She goes to Shiori to help her plan selling the story to a weekly magazine.
Nanami's plans get crushed and she is forced to drop out of school. Shiori is convinced that her classmates were involved in the death of Kozue.
Kaoru is a class leader with excellent grades. Her father, Hideki, is a famous prep school instructor that even appears in commercials. One day, she follows Bella to her home.
Kaoru resolves to live up to her father's expectations of her but falters after finding out they're out of money and can't buy the medicine he depends on. She is introduced to a less than savory way of earning money by Maria but can't go through with it.
Shiori has been forced to her limit after watching Bella destroy Ayane, Rin, Nanami and Kaoru one after the other. She resolves to find out the truth behind Bella's relationship with Kozue.
Maria hears about the true identity of Bella from Shiori. Her attempt to kill Bella fail. Finally, the truth behind why Kozue died comes out. Can Bella fulfill her promise to Kozue?
