JUY-787 To make a baby with my wife, I abstained for a month and saved up my sperm, but it always gets stolen by my sister-in-law, Tsubasa Hachino

Jinji was ordered by his wife to abstain from sex for a month for fertility purposes. However, after half a month, he couldn't hold back and secretly did edging masturbation thinking, 'If I don't release...'. He was caught by his sister-in-law Tsubasa... Tsubasa, who was frustrated with her husband's lack of sex, became excited by his abstinent penis and teased him, smiling, 'It must be all built up, right?'. Jinji suppressed his sexual desires with reason and somehow endured until the day of fertility sex. Then, on the day of fertility sex, Tsubasa visited again...