My mother-in-law, Yuka, has been living with us since yesterday, worried about my wife who is nervous about her pregnancy. Although Yuka's support should have eased my wife's anxiety, she has only become more irritated, and I have been banned from smoking, drinking, and masturbating, so I have reached my limit. With such a frustrating feeling, I reach for Yuka's underwear while she is taking a bath. The next day, unable to resist, I masturbate with Yuka's underwear, but Yuka sees me...