TERA-005 The secret of a close wife and younger brother

Knowing that his younger brother was preparing to take the university entrance exam, his older brother decided to invite him home to facilitate exam review and prepare carefully for the upcoming exam. However, he did not know that this was a decision. very wrong decision. Since the day he returned home, he couldn't take his eyes off his beautiful sister-in-law Otsuki. Her image was always present in his mind and many times he imagined adult stories with his sister. The desire grew stronger day by day and he only thought that the feelings he had for his sister-in-law were only one-sided, he did not know that she had also been watching him since entering this house. On a fateful day, when his brother was away, his sister took the initiative to directly solicit love from him. Feeling surprised but also happy because the feelings he had for so long for her were not one-sided, he without hesitation, he immediately agreed to meet his sister's needs without even thinking about his brother who was working hard to earn money to support the whole family.