'I have a request… Please, kill me.'
'Help me get out of here and I will kill you.'

The strange bond that these two have, their 'oath', becomes stronger. What is waiting for them at the end? Why were they both locked up in here exactly? What is the fate that these two bear? While being fully prepared to die, both of them set out to escape this locked building.

This time around, the characters are good, though we do have to say we are a bit disappointed that the best that Nobuhiko Okamoto could do for Zack is just rehash Accelerator, who by the way is better than Zack in every way. The series overall tries a bit too hard to be spooky. While it does make a good story thus far, it is trying a bit too hard. The music is well done and the art is okay. The series does have this habit of going from being very quiet to violent when someone is dying really fast, so you can’t really assume what is going to happen next. 2 of the 5 guardians died in the first three episodes so we wonder how long this escape game will actually last.

Zack

Voice Actor: Nobuhiro Okamoto

Zack sports a large scythe, is covered in bandages from head to toe, and is a cutthroat young boy. His age is unknown, but it’s said he is in his early twenties. When he sees a human who is happy, he gets an urge to go kill them.

Rachel

Voice Actor: Haruka Chisuga

Rachel is a girl who has lost her memories. Relying on Zack’s intelligence, she decides to go with him. For some strange reason, she has has lost her human emotions.

Danny

Voice Actor: Takahiro Sakurai

Danny is a man who claims he is Rachel’s doctor. He has a gentle demeanor along with a kind smile as he attends to her. He appears to have an uncommon attachment to ‘sick eyes.’ He takes extra care to make sure Rachel’s eyes come to no harm but his true motives are...

Eddie

Voice Actor: Natsumi Fujiwara

Eddie is a boy who is the master of floor B4. He makes graves daily for the people who die in the building. He falls in love with Rachel at first sight and appears to be making a grave for her with her name etched into it, but...

Cathy

Voice Actor: Mariya Ise

Cathy is the master of floor B3, and is a sadistic female jailer. She refers to herself as ‘The Judge’. While talking cheerfully, she doles out cold, cruel punishments.