Hinadori no Musou - Jonai Kanyu no Dokuhaku

Childhood friends Miu and Toa are like peas in a pod and do absolutely everything together. Miu believes that the two of them will be together someday as a real family. One day, he begins to suspect that Toa's feelings for him are not the same and touches her in her sleep, though he knows he shouldn't... No matter what he does, she doesn't wake up. So, Miu's actions begin to escalate... While the heroine sleeps, her childhood friend forces sexual training on her, making her orgasm over, and over. A continuation (prequel) of Naive Reverie