You seem new to the world of Visual Novels. Have you already understood the concept of romance and corruption in these games?
In many Visual Novels, romance is a central mechanic, where the player's choices determine how relationships with characters develop. Corruption, on the other hand, refers to a narrative where the player's decisions can lead characters to changes in behavior, morality, or alignment, often exploring darker or more complex themes.
blue = nice guy = Romance
red = bad guy = Corruption