One of the best games by this developer.
The game was originally intended for practice, but as time went on, a lot of new ideas came up, and it evolved into a full game with a new style of face drawing, improved drawing in general, ANIMATION, and the developer hired a new programmer (NekoMiku) to improve the gameplay.
The game is set in the same universe as the previous game.
The protagonist is a researcher who produces potions, and his wife is a priestess. They meet a familiar descendant of the savior from the previous game, Bob.
Together they explore the dungeons and get trapped falling into the lair of the Succubus Queen.
The Succubus Queen wants to corrupt and take over the body of the protagonist's wife, also encouraging Bob to corrupt your wife.
Hypnosis, brainwashing, nipple fucking, etc. All of which will threaten your wife's chastity.
Can you keep your wife safe from the Succubus Queen?
Or while you're distracted by her, will Bob get your wife's heart?
It's all up to the player.
Upd 0.75
With update 0.75 the game received a big update related to the gameplay component of the game. The item crafting system has been redesigned, new items have been added, hidden NTR sex system, a couple of new scenes, NTR ending and some technical stuff like quick text skipping or dialog history.
Basically I liked everything, except that the Craft system can be confusing and the final scene of the NTR ending, as it seemed to me not very exciting :|