So, I've just started writing a three part book with four main characters (two male-two female, and yes they do pair up). It is called "One Thought Left" or "OTL" for short.
And no, it's not available to be read online. No one gets to read it until I have it done (no clue how long that will take). I am commissioning (using gaia gold) some artists to draw the four characters. Those people do get to see the character sheets and reference pics with snippets of plot details (love intrigue and death scenes).
There are six chapters for each part (a total of eighteen chapters), and titles for all of them. I am currently writing the plot outline for the chapters.
And I admit, there will be a kind of cliffhanger ending that almost requires another book to be written. Although, I could be mean and just leave it at just one book. I can imagine the WTF?! expressions. Ah, priceless. But sense I'm taking my time and actually enjoying this, I will probably continue with a second book if not a series.