Niboshi-kun no Hentai  

ニボシ君の変態

Nekota Kuniboshi is known for his perversion, which causes all girls at his school to despise him except for Yumeno Shizuku. She is kind, smart, and the prettiest girl in class. Despite her dislike of Niboshi's behavior, she talks to him, leaving him confused about how to deal with it. While Shizuku is away from her desk, Niboshi finds a half-empty water bottle and drinks out of it. He then stalks her while she practices gymnastics. As he watches, he wishes that he could turn into the suit she was wearing. To his surprise, his wish comes true! The liquid in the water bottle turns him into any object he desires. An experimental relationship begins between Niboshi and Shizuku as they explore their newfound abilities together.