|An accident occuring in "The World", will be solved in the net framework space, with the OVA "Liminality". Mai and Kasumi collapse in the real world, however, only Mai recovers, leaving Tomonari in a coma. The incident will be investigated through the real world point of view. You will continue to come closer to the truth of the accident within the game while investigating from the real world in the OVA.
Hannah's comments: If I had known that there was an OVA before "Sign", I should have seen this first. Strongly recommend you see "Liminality" before "Sign" and "Legend of the Twilight". Even if Liminality also is quite hard to understand from the beginning, it still is the beginning of the whole "hack-story". The Liminality takes place 99% in the real world, compare to "Sign", which takes place 99% in the virtual world.I don't know how to buy the OVA , those DVDs came with PS2-games, with same name, and it was a luck I got in touch with the OVA. A friend of mine has all four PS2-DVDs. The OVA contains only 4 episodes, and all of them are different length. The first episode is around 45min long, then 25min , 30min and 25 min. "Liminality" is a good anime series to start with. Nice characters, and not so many, so it's easy to remember who is who.