Miwa is one of Ichigo's friends and also her classmate, however, she is unaware of the Mew Mews. One of her other friends, Moe Yanagida, is also unaware of the Mew Mews. They are seen together, most of the time, and they are in almost every episode of the anime.

In episode 23 of the anime, Keiichiro Akasaka, the baker from Café Mew Mew, helped Miwa pay for a box of tea, so she developed a crush on him. Miwa and Moe, who has a crush on Ryou Shirogane, made gifts for their crushes, as suggested by Ichigo, to win their hearts. They put a lot of effort into making the gifts but the boys rejected them, resulting in Moe and Miwa being upset.

Kish later stole Moe and Miwa's spirits and used them to create two Chimera Lovebirds. However, Ichigo defeated them, and, luckily for Moe and Miwa, Keiichiro and Ryou revealed that they actually liked their gifts. Still in love with the two boys, Moe and Miwa vowed to open a fan club for Ryou and Keiichiro.