Honnou Level de Aishiteru

"My feelings are stronger than you can imagine." Chiho, a second-year high school student, is childhood friends with the slightly overprotective, handsome Shion. Shion is an ultra-perfect human being: excellent grades, handsome, and an exceptional athlete. He's also the heir to a wealthy family. Because of this, boys fear him, girls idolize him, and Shion no longer opens up to anyone except Chiho, which worries Chiho. But their relationship suddenly changes when a "certain change" occurs in Chiho on her 17th birthday... Shion suddenly kisses her and says, "I never thought of you as a childhood friend."