Osananajimi to Saikai shitara... Osu deshita!? - Jirasare Ochiru Dekiai Ecchi

"Did you expect it?" My childhood friend whispered in my ear; unlike when I was a child, his voice was low and sweet. With her long fingers, he deliberately made embarrassing noises while attacking Naka. I can't believe this cute guy has grown into such a man! Ritsu, a junior college student aiming to become a nursery school teacher, has come back to her neighbor's house, where her childhood friend Kami left her six years ago. In order to pass his assigned piano exam, Ritsu takes lessons from pianist Yoshimi, but the breath in his ears and the body heat from his overlapping hands make him unsettled.