Ep 6. The 4 O'clock Library

Toilet-bound Hanako-kun season 1 episode 6, titled "The 4 O'clock Library," is a must-watch for fans of supernatural and horror anime. This episode follows the story of a young girl named Otsuki, who arrives at school early every morning to spend her free time in the library. However, strange things seem to be happening in the library, with books moving on their own and whispers echoing through the air.

When Otsuki confronts her friend about the spooky occurrences, she is led to the library's secret room - a room that appears only at the mysterious hour of 4 o'clock. It is here that Otsuki meets Hanako-kun, the ghost who haunts the bathroom on the third floor. Hanako-kun offers to help Otsuki find out the truth behind the library's secrets, but warns her that there may be consequences for meddling with the supernatural.

As Otsuki and Hanako-kun navigate the dark and dusty secret room, they come across a strange book that seems to be the source of the disturbances. The book is titled "The Mermaid's Lover" and tells the story of a mermaid who falls in love with a human. However, their love is forbidden and tragic consequences follow.

Intrigued by the book, Otsuki decides to investigate further and begins to unravel a dark secret about the school's past. As the secrets of the library and the school's dark history begin to come to light, Otsuki and Hanako-kun find themselves facing danger and must work together to save the school from a supernatural force.

The episode showcases stunning animation and a compelling storyline that keeps viewers engaged and on the edge of their seats. The unique blend of horror, supernatural elements, and humor make this episode a standout within the series. "The 4 O'clock Library" is a great entry point for newcomers to the series and is a must-watch for fans of supernatural anime.