I tried reading this but the brightness of the text hurts my eyes and the missing images for the background seem to be distracting. Maybe center the contents box and replace the pictures. Definitely darken the text a little bit. Other than that this is a great start. :)
You weren't kidding when you said your chapters are long! Haha, I don't mind long chapters myself, but some people would see that and not wanna finish. I'd probably recommend parting it out and making them into separate chapters and split them on the really suspenseful parts that would normally be in the middle. I do that with mine as well, 3 parts for each chapter. I do really like Hanru though, and Leo for that matter. Out of all of the characters I thought those two had the best personalities. Though, Justin did remind me of Justin from soul eater because of the headphones haha. All in all it's definitely interesting, suspense mysteries are a lot of fun to read if written well. And I think you've done that. Keep it up!