This is a fantasy RPG in which the protagonist's beloved mother and childhood friend are seduced by non-human beings. There is a protagonist's point of view option, so you can experience the heroines' transformations from the protagonist's perspective without him noticing. There are no tedious battles or level grinding.
The process leading up to the fall is what's important in a cuckolding story. The game was designed to heighten your emotions as you approach the moment of the heroines' betrayal, as the relationships you've built up begin to crumble. Although the title has a "2," there is no story connection, so you can enjoy it even if you haven't played the series.
There are eight stages of corruption, and as the story progresses, the costumes are reflected in everything, including standing portraits, character sprites, and single-image scene illustrations.
There are 21 male characters, all of whom are of different races. Various species appear, including insects, insectoids, beastmen, goblins, and minotaurs. You can also view the erotic status of each male character. This status, like that of the heroine, is updated throughout the story. Of course, dedicated character sprites have been created for all the male characters.
The erotic status of the heroine and the male partner is updated at each stage of the corruption process. As the story progresses, new information will be revealed, such as the development level of each part of the heroine's body, the male partner's breeding chart, and information about his reproductive organs.
Of the 21 male characters, 20 have individual endings, with one exception. Clearing the true ending unlocks all flashbacks and the erotic status viewing room (including additional erotic statuses).