Nurse Angel Ririka SOS

is a Japanese shōjo manga series created by music producer and television writer Yasushi Akimoto and mangaka Koi Ikeno. It was serialized in Ribon Magazine from January 1995 to June 1996, and subsequently collected into four tankobon volumes by Shueisha. An anime adaptation aired on TV Tokyo from July 7, 1995 to March 29, 1996 for 35 episodes.

Plot
Ririka Moriya is a bubbly and klutzy 4th grader who has a crush on Nozomu Kano, an English transfer student. On her 10th birthday, Nozomu gives her a magical nurse cap, which allows Ririka to transform into the heavenly guardian, Nurse Angel. Nozomu tells her that he is really named Kanon, and he comes from the planet Queen Earth which has been overrun by the evil Dark Joker Organization, who have tarnished Nozomu's world through mass pollution. He was sent to find the legendary Nurse Angel, who would save both Earth and Queen Earth from destruction by finding the Flower of Life. With help from Nozomu and her friend and neighbor Seiya Uzaki, she soon learns to fight as Nurse Angel to protect her friends.