Mama no Imouto no Doutei Kyouiku ~Hikikomotta Boku wa Gaishutsu Sezu ni Nakadashi Suru~

One day, I became a shut-in. Thankfully, my parents don't nag me too much. "Kota-kun, dinner's ready." That voice wasn't my mother's. It was my mother's younger sister, Mitarai Miki. My parents are currently on an extended trip, so my aunt has come over under the pretext of looking after me. Of course, my aunt wouldn't come willingly. I guess my mother called her. (She's so... pretty... and sexy...) As I spent time alone with this beautiful aunt, I couldn't contain my desire any longer and indulged in masturbation...but I was caught in the act. "Oh... it stinks... the air is filled with the scent of chestnut blossoms." Then, the beautiful woman in her late twenties let out a meaningful chuckle...