Ura Birthday

Tsunetsugu is a high school student raised by his single mother. To support their modest household, he secretly takes a part-time job, unaware that it violates his school's strict regulations.

When the grade-level head teacher, a man his mother despises, discovers Tsunetsugu's job, he uses the threat of revoking the boy's scholarship recommendation to blackmail her. Forced into a degrading sexual relationship, she struggles to protect her son's future while enduring her own humiliation and growing, conflicted desires.