Crying and Rubbing NTR: My story of saying goodbye to my busty sister-in-law while making love, as I'm about to study abroad. Haruna Hana NKKD-307

The younger brother, a researcher at a pharmaceutical company, is realizing his long-held dream and will be heading to Europe next month for research. Before his departure, he's staying at his older brother and sister's apartment. His virtuous, busty sister-in-law, as always, supports him with a smile every day. However, one day, while doing housework, when she's alone with him, he confesses, "Actually, I've always liked you, sister-in-law." Faced with this confession and affection, the sister-in-law is caught in a dilemma, unsure how to respond...