This is the best Hentai Manga I've read. Smut scenes were full of details and beautifully drawn, it's not even a bit messy. Sex is passionate, nasty and affectionate and there is even a lot of foreplay. Their relationship is cute and wholesome and You-chan is very considerate to Reina, caring for both her pleasure and wellbeing.
The Affinity Between Us ~Sweet and Sticky Sex With My Childhood Friend