Sleepless Night 2 is the sequel to the original Sleepless Night (obviously). However, Haru only plays a little role in this game. The main focus is on the three girls Shizuka, Natsumi, and Midori. You are invited to a ladies’ night in Shizuka’s house and no boys are allowed. But Haru is supposed to work on a school project anyway. That’s right, chronological the game is set in the same time as the first Sleepless Night. This is important and you’ll soon know why.
Basically, the personalities of the characters are the same as in the book series. However, please keep in mind, that the Sleepless Night series is not connected to the book series and not “canon” in the book’s universe. Just look at these games as being set in a parallel universe. It is recommended to play the first game, but it is not necessary.
While Sleepless Night did not explain much, you’ll find more answers in Sleepless Night 2. There are four main endings which will explain a few things, but there are also “death endings” that are similar to the first game. When you finished the game, you’ll unlock the epilogue. And the epilogue miiight surprise you. 😉
By the way, people keep asking me what the official title of the game is. The official title is: Sleepless Night 2: Ladies’ Night(mare). But you can also refer to it as Sleepless Night 2, Sleepless Nightmare, Ladies’ Nightmare, or just SN2.