Misty Boy

Suzune never got along with her cousin Yuushin when they were young. Now that she's in high school, he suddenly reappears after years apart, and he seems like a totally different person—he's become cool and attractive! Yuushin mentions that his grandmother told him, "Protect Suzune," and now he wants to live with her...!? They're not kids anymore, and Suzune is running out of reasons to argue with Yuushin...