Nonohara Yuka no Himitsu no Haishin

Yuka spends her days in an uncomfortable classroom, eating lunch alone, and thinking only about the time she would sex stream at home. One day, she finds what appears to be a love letter in her shoe locker! When she opens it with high hopes, she finds a screenshot of her latest stream and a letter calling her… The man who called her uses the fact that her stream was exposed as a pretext to pressure her into sex streaming in front of him. Rather than being assaulted… she does as he says and does it until she climaxes, but the man assaults Yuka right after she has climaxed!?

(Source: Lune-soft, translated)