The two volumes contain one long case, "Murder Committed by Inspector Kenmochi", as well as two short stories in the second volume. The first one-shot, "Evil Spirit at the Diving Pool / Diving Pool's Evil Spirit" was first published in the July 2009 edition of Shounen Rival and is about an evil spirit at the diving pool at Kindaichi's junior high school. The second one-shot is titled "The Campsite's Mysterious Event." Both short stories feature Kindaichi in junior high school.

Sequel to Kindaichi Kindaichi (frequently with best-bud, Miyuki) travels to various places where a murder has taken place, typically involving ghosts, curses, myths and folklore of significant events from the distant past, and solves the mystery using ingenious deductions of curious clues and his cool magic.

From Aerandria Scans:

"The moment you open the letter, you will be cursed. After reading the letter, you have to make two copies and send it to a close friend within 24 hours."

Everyone knows what it's like to pass notes in class. People carelessly write about things like love or gossip. One day, everything suddenly turns out evil...

Itsuki is an assistant at the Folklore Research Institute and is always caught in mysterious cases as he pursues his studies. Follow along as he tries to unlock these mysteries that are tangled with old beliefs and local customs using his keen professional intelligence. (JDorama.com)

A murder case for the 20th anniversary for the manga of Kindaichi

From Tokyopop:

Kindaichi (frequently with best-bud, Miyuki) travels to various places where a murder has taken place, typically involving ghosts, curses, myths and folklore of significant events from the distant past, and solves the mystery using ingenious deductions of curious clues and his cool magic.

In 1995, this manga won the Kodansha Manga Award for shounen.