Miharu Sena Kanaka

Miharu is a resident of Seiren who pulls Yukinari Sasaki to Seiren and follows him back to Earth to live with him. She has a mark on her forehead shaped like three dots in a triangle called Seikon, which provides her with several powers, including the ability to travel between Seiren and Earth and the power to create explosions whenever she is in emotional distress. She is also the only woman who can touch Yukinari without triggering his allergy. Miharu has a large appetite and a rapid metabolism. On Earth, much of her focus is in questioning her friends as to whether something is edible or not (like butterflies), and her continuous misunderstandings about Earth (such as believing that April Fools' Day means that everyone on Earth lies for one day) are the title's primary source of humor. Despite this, she has a heart of gold, an explorer's fascination with Earth, and has a close relationship with Yukinari. She is an extremely innocent girl who does not show any discomfort with being partially or fully naked in front of Yukinari, and she does not lose her temper even when made the target of Fukuyama's lecherous actions, unless the process involves food or disrupts her eating time.