System

Animation
Restraint
Elder sister's Aya was sunk in the water tank. This is a game that rescues the elder sister restrained with a cubic water tank.
Operate
The control is very easy ! All controls can be done with the mouse (dash,jump,swim,climb, and Breath by mouth-to-mouth etc...). The rule is very simple ! First of all, find the key somewhere of the water tank.
Next, release the restraint, and rescue Aya. Do not drown on the way. And, do not touch a dangerous living thing.
Swimming
Key
Gimmick