Shiku Rumi (志久 るみ Shiku Rumi?) is a minor character from Heartcatch Pretty Cure! and Shiku Nanami's younger sister. She is also best friends and schoolmates with Haruka, and they are two of the only minor characters who know about the secret of Chypre, Coffret, and Potpourri being fairies.
Rumi has short chocolate-brown eyes worn in pigtails held with red ornaments. Her eyes are a similar shade of brown. She wears a pink shirt beneath a pale yellow dress, a bracelet, and dark red shoes with short socks.
Rumi is still in kindergarten, and out of admiration she enjoys imitating her older sister. She always tries to stay happy and content for others sake. But like Nanami, she terribly misses their mother and struggles to come to terms with having lost her.
A Sad Mother's Day
While walking home from kindergarten with Nanami, Rumi noticed a girl giving a carnation to her mother, and decided to give one as an offering to her deceased mother, which the sisters buy from the Hanasaki flower shop. When they arrive home, Rumi places the carnation next to the photograph of her mother, but as her mother could not directly accept the gift nor say thank you, Rumi became very depressed and started to cry.
The next day, Nanami attempted to help Rumi cheer up, but Rumi ran away her sister. When Nanami caught her, they started shouting at each other, leaving them both in tears. After the fight, Rumi discovered that Nanami's Heart Flower had been taken by Sasorina. The little girl picked up the orb her sister was encased in, pleading that she wake up.
As the Pretty Cures fight the Desertrian, Rumi stayed hidden with Chypre and Coffret, but heard the creature shout the feelings in Nanami's heart, and felt sorry for not realizing the pain her sister was in. After Nanami is rescued, Rumi sits with her and apologizes.HPC14
Becoming Friends with Haruka
Rumi and her classmate Haruka meet the fairies (as they did not turn into dolls). After the kindergarten teacher turned into a Desertrian, the other children fight back to rescue their teacher. As Coffret leaves from Erika, he gave the blue tact to Rumi and Haruka to play with, but the Snackey Army steals it, and trapped Rumi and Haruka. After Cure Blossom rescues them and Cure Marine uses her Blue Forte Wave with her tact, Rumi and Haruka thanked Cure Blossom, but convicted Marine to keep up with her tact, making her so jealous.HPC39