[Numirechan] Kurobeta-chan

An anxious schoolgirl in a sailor uniform is confronted by a stern teacher who threatens to report her after catching her sketching a lewd picture, leading her into a cramped dormitory where she is blackmailed into sexual submission. The teacher, a mature male figure, forces the shy girl to perform oral sex while taunting her about her virginity and tightness, culminating in a raw, intense encounter that leaves her breathless and overwhelmed. The stark black‑and‑white panels emphasize the power imbalance and the girl's helpless surrender as the story unfolds.