Toshi to Mahou wa Kiss Shidai

Tohru possesses the unusual ability to remain unseen by everyone except Tsumugi, his childhood friend, which has led to strong feelings for her. His invisibility causes him to stumble upon a witch and inadvertently remove her powers. Instead of punishment, the witch offers to assist him in pursuing Tsumugi. However, her powers can only be restored through a kiss. As a result, Tohru's invisibility is about to come to an end.