Control a member of UESC "Eva" for the purpose of beating the "Evil Princess"
who lurks somewhere in Evil's Castle. This is an "Exploration Action" game.
Under severe conditions.
She has to buy weapons at the castle or buy them at the shop,
while exploring around the castle with its complicated architecture.
Each type of monster has the corresponding H motions.
Contains H events that happen when defeated by a boss.
After game clear, a free arrangement mode will be unlocked.
Achievements and equipment for completionists are also contained.