HSODA-010 Lips alone aren't enough. A thick, sticky exchange of saliva with intertwined tongues. Morihiko Hinata.

Three years after marriage... my sister came home for a visit. My younger brother, who still lives at our parents' house, was heartbroken because he got dumped for 'being bad at kissing'... My sister, whom I hadn't seen in a while, looked even more beautiful than before. I started wondering what kind of kisses she gives... wanting to learn 'how to kiss well', I just went ahead and kissed her! In my excitement, I inserted my penis and had sex for the first time, making me incredibly excited! The next morning, I thought I would definitely get scolded, but instead, my sister proposed practicing kissing...