[Moririn-Monson] My Girlfriend's Gal-like Onee-san Seduced Me and We had Sex Ch. 2

A shy student is drawn into a secret, passionate encounter with his girlfriend’s confident older sister, whose bold advances lead to intense intimacy and a climactic release. The tension spikes when a ringing phone threatens to expose their scandal, adding urgency to their heated liaison. The story keeps readers hooked with its blend of desire, danger, and daring romance.