It was a disappointment. Maybe the version I read was poorly translated or it was just poorly written. It hard a hard time getting points across to me, both artistically and dialogue wise. The art is solid but the flow of and the sequences were crappy. I had no idea what was happening most of the time.
Story wise, I am really really let down. It takes place in a facility 6000m underwater where a mysterious massacre occurred! You can play around with so many types of fears! The deep, dark ocean itself scares me personally, nightmare deep sea creatures, claustrophobia(Come on, you can imagine the facility collapsing in on you, it could be so scary!). But no. He went with (*SPOILERS*) summoning some ancient evil god or something.
It had potential but I was not entertained. :c