10 Anime Series All Horror Fans Need To Watch

2. The Future Diary

The Future Diary, produced in 2011, centers around Yukiteru Amano, a middle schooler whose only interest is his diary and some imaginary friends…who turn out not to be so imaginary.

The god of time and space is close to kicking the bucket, and what better way to choose a successor than to create a last man standing death game? Faced with a life or death struggle, Yuki must also handle Yuno Gasai, a fellow classmate and contender whose obsession with him goes into violently disturbing territory.

There's one primary reason this show is amazing psychological horror: Yuno Gasai. She's an iconic yandere, and is in love with Yuki to the point where she's willing to kidnap him and hold him hostage just to keep others away from him. Yes, there are very dark reasons for Yuno's obsessive and mentally unstable behavior, but she's incredibly unpredictable.

Yuno will put you through an emotional rollercoaster as you switch between despising her, feeling sorry for her, or feeling horrified at her behavior.