Series A wife is called to serve a drink to a middle-aged man at the inn run by her husband... Her wife falls into a creampie entertainment that do

A wife running a family-owned inn is summoned to join an older male guest for his evening drinks... and succumbs to a marathon session of creampie-filled service that lasts all the way until morning. — Sora Komatsu

Ayaka Yamagishi, a wife who was called to serve a drink to a middle-aged man at the inn run by her husband... and fell into a creampie entertainment that didn't end even when the morning came.