Kanon Kamisaki is a first year in middle school. Her mom is a photographer and her dad is a famous writer. Getting expectations from people around her- is annoying. She has been wishing for an ordinary life but it had gone away- nope.. it had gone worser. Out of a sudden, she transforms into Cure Humming saying the phrase, ''Tweet & transfer!~'' ''Happy and excitement, Cure Humming!''

SPOILER:

Kanon has a mysterious power where each time she transforms, her life is at risk. She loses one of her memories. One by one.. until..