There was a rumour going around your town, that whoever drowned in the old river, would be magically reborn on the night of the lantern festival celebrating Daylight Savings, as a spirit called an Umarekawa.

It just so happened to be that lantern festival. You were just going to the slushie booth when you saw a girl with white hair, wearing the “rose soul” of the Umarekawa. She was falling and splashed into the river.