Fukakusa no Shosho was so in love with Ono no Komachi that he followed after her when she left Kyoto, and he came to Dewa (present Akita and Yamagata regions).
In the reply to a love letter from Fukakusa, Komachi said, “I miss the beautiful peonies that I saw when I was a child. I will return your affection if you could plant 100 peonies for me.”
At the time, Komachi was suffering from smallpox. She visited Isozaki Shrine every day to wash her face with clean fresh water from Komachi Izumi (Komachi Pond), believing that she would be cured within 100 days.
Fukakusa brought a peony to Ono no Komachi every day and put those flowers in front of the gate of the house where she lived. This is how Momoyo Gayoi (100-day straight visits) started. However, on a heavy rainy day when Fukakusa was delivering the 100th flower to Ono no Komachi, he was swallowed by a flood and died at Oppeji Bridge.
Komachi learned that Fukakusa ignored his servants warning about the bad weather and tried to deliver the last flower to her. She grieved deeply for his death, and built a stone monument for him at Douzenji (Douzen Temple).