I found reference picture in Pinterest，course I hadn't went to Kamakura. But I really love ocean.

The flower is daisy.It blossom in the end of spring and the begin of summer.In this time, fruits just start growing.We used to call it "青涩（youth）".

And it means “deep love hiding in my heart” in my country.

KOI is a Japanese word.It can means "love" or "carp(鯉)".They are the same pronunciation in Japanese.