My reliable senior, Mori-san, always covers for my mistakes. One day after a drinking party, I missed the last train and ended up having another round of drinks at her place. Her careless pajamas and prominent nipples...her casual, no-bra look that she never shows at work made me involuntarily excited. Driven mad by Mori-san's allure, I repeatedly betrayed her by having sex right in front of her, teasing myself with only the first 3 cm of my penis.
