Himegoto Union Motto H! -Kunoichi Kujou Hijiri no Icha Love na Nichijou | ひめごとユニオン もーっとH！ ～巻ノ一九帖聖のいちゃラブな日常～

This is the first of four low-priced after-stories for Himegoto Union, focused on Hijiri. It’s been a few weeks since they’ve become lovers and they’ve been having a sweet time together while keeping their relationship a secret from others. One day, a girl named Nanoka appeared suddenly before them, introducing herself as Saizou’s imouto. She clung on him and wished to become his bride. With Hijiri’s older sister Matsuri also joining the fray, what will become of their sweet time together? Hasn’t it become a harem life!?