https://www.pixiv.net/en/artworks/132099995

Adolescent student, pregnant as a result of her scumbag boyfriend's cuckold hobby
She becomes dependent on her boyfriend due to her low self-esteem and reluctantly engages in his cuckoldry hobby, but in addition to the fact that sex with her boyfriend was not enough, she begins to justify her actions by thinking that she is doing it for him.
As she gradually begins to lower the bar for sex, her feelings of guilt toward her boyfriend disappear, and she becomes pregnant while engaging in outdoor exposure, outdoor gang rape, and other hardcore activities.
She has sex with other men, one after another, for her own pleasure and her boyfriend's pleasure, even though she is pregnant with a belly full of dead weight, but one of the men tells her about her boyfriend's true nature. In desperation, she is about to give birth...

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