This is a big episode, it is two times longer than the third. There are three different routes and four sexual scenes in it. Real sexual scenes this time. Also, the characters personal stories are shown in this update.

This adult game is in a VN format, but also contains immersive RPG style aspects, including character development, combat and exploration systems.

Features :
- A lot of different endings that reveals new aspects of the story and characters.
- Choices made by the player during the game affect relationship levels and actions with the characters.
- The greater the intimacy of the protagonist to the girls, the more effectively they fight. And vice versa, any actions of the protagonist will affect the attitude of the girls.
- Several story arcs, that are depending of the protagonists choices.
- Development of romantic relationship between characters grows gradually, and future choices are dependent on their personal history and actions.
- Original graphics.