My beloved "Little Princess" girlfriend was already trained. Another man taught her lewd practices

The protagonist, Ritsu, has a girlfriend named Sarina who is from the same class. - Sarina keeps her distance from her lively classmates and - has a quiet personality, reading books in the corner of the classroom. - Due to her small stature and neat appearance, her classmates nickname her Princess. - Sarina and the kind-hearted and slightly shy Ritsu are on the same wavelength, so they slowly - get along at their own pace and deepen their bond. Ritsu dreams of one day being able to have a deeper, more loving relationship, but he doesn't know that Sarina's body has already been completely violated by her uncle...​