Yojo no jidai

Shy outcast Kokoro has been avoiding school for weeks when she discovers a portal in her bedroom mirror. She reaches through and finds herself transported to an enchanting castle where she is joined by six other students. When a girl in a wolf mask explains that they have been invited to play a game, the teens must work together to uncover the mysterious connection that unites them. However, anyone who breaks the rules will be eaten by a wolf.

In 2012, Atsuya and his 2 childhood friends do something bad and run into an old general store. They decide to stay there until the morning. Late into the night, Atsuya sees a letter in the mailbox. The letter is addressed to the Namiya General Store and the letter was written by someone to consult about worries. Incredibly, the letter was written 32 years ago. The mailbox is somehow connected to the year 1980. Atsuya and his friends decide to write a reply and place their letter in the mailbox.

Summoned by the black sphere, Kei and Masaru fight against extraterrestrials until Masaru grows tired of fighting and refuses to continue.

Set in the year 2020, following her supposed death, a young woman returns as the son of her noble family to precede the family's prestigious company, with a demon at her side to avenge her parent's murder.

Conan Edogawa comes to a bathhouse with Ran Mouri and Ai Haibara. There, he sees suspicious men in the dressing room of the men's bath. However, Conan falls down in the bathhouse and loses consciousness. The two suspicious men, Tatsu and Kondo, take him away in a car. The two belong to the underworld and seem to be working at someone's request. Meanwhile, a woman named Kanae visits the Mouri Detective Agency to request an investigation into her husband's affair. She shows them a picture, and the husband in the picture is one of the culprits who kidnapped Conan.

The final showdown, and the final reveal. Who is Friend? How can he be stopped?