Anehame: Ore no Hatsukoi ga Jisshi na wake ga nai

Do you want to come inside Rio-nee, before I get married?

My first love was Rio-nee. I knew I wasn’t supposed to have romantic feelings for my older sister. But a handjob made me realize my true feelings, and we crossed the line into real sex… My first love, finally fulfilled, was both sweet and bittersweet. Will our last memory be the forbidden, unprotected sex to conceive a child!?

(Source: Frances Shoin, translated)