Titanic Mystery: Ao no Senritsu

It's not easy being a diver. We choose one of the three girls to play as (but our choice has no consequences) and start exploring the wreck of the Titanic. Our task is to find the true cause of the liner's destruction. To do this, we need to find and bring to the surface various items and open doors. Treasure can be sold to investors, and other items can be given to the press in return for the items needed to get through. Money is important because there is a time limit, and the more money you have, the longer you can keep the project going. Air is also limited, but you can replenish it by going to the surface. Hint: The first item you find is a green plate, give it to the professor and if you have at least 200,000 in the bank, he will sell us the radiation gauge for 120,000.