Kawasaki-daishi Temple is an ancient temple in Kawasaki City, near Tokyo, and the area's most famous temple. It venerates the priest Kukai (774-835AD), whose posthumous name is Kobo-Daishi.
Kawasaki Daishi Temple has a unique octagonal pagoda, which these lucky ema charms emulate in their equally unique octagonal profile.
Kawasaki-daishi Temple offers three ema, all depicting the Great Master Kobo-Daishi, but one specifically for finding the love of your life (red string), one for success in examinations, job applications and interviews (green string), and one for making your earnestly held desires come true (yellow string).
They all have the same reverse, where - from the right - your write your wish, then your name, your age, and the date.