[Fuuga] Sono Tobira no Mukougawa - behind the door Final Chapter (Fushidara na Ani Imouto) [KenGotTheLexGs]

An older brother with glasses reunites with his younger sister Linn, their lingering tension from a forbidden encounter boiling over the moment they embrace in the final chapter. As Linn clings to him with tearful, trembling need, he claims her mouth and body with desperate hunger, culminating in her deep, trembling climax and his hot release across her flushed skin. The quiet confession — "All I have is regret" — only fuels their mutual surrender to the taboo love that defies family boundaries.