Motto Otona wo Dame ni Suru Kangoshi Kitano-san

The main character asked Kitano-san to help him bathe. When it came time to wash his crotch... "Oh ...... n~ I'm having trouble......" "Oh...would it be too embarrassing if you get naked, too...?" He couldn't resist the sight of her fluffy tits... "I knew it... you've been holding back for a long time..." "I'm about to come...? It's okay... let me cum inside you...?" She reluctantly accepted when he got a little pushy. It's a sexual-healing session with a big-sister nurse! (Source: DLSite, translated) Note: Originally published for Comiket 96.