Ijiwaru Oji Ha Mechakuchani Aishitai Giji Shinkonde Amaero Chokyoseikatsu summary:

The pleasure rushes through her body, and even though she's scared, she still wants more.After her mother remarries, Wakaba is reunited with her first love, Hiroki. However, he coldly tells her, "I don't think of you as a sister at all." But Hiroki's attitude changes drastically after a certain incident! Despite his harsh words, his sweet kisses melt her heart, and now it won't stop beating...!When he plays with her sensitive parts, she can't think about anything else because of the intense pleasure!A first love that begins with a reunion! ☆