At first, she thought Masaya was oblivious to her feelings, but he later reveals that he shares her feelings and they begin dating.
Masaya is the only person outside the Mew Project to know Mew Ichigo's real identity, but initially pretends otherwise as he knows Ichigo does not want him to know.
She is the first of the Mew Mews to be introduced and her D. She is attending a Red Data Animal exhibit with him (Although she believes that he is oblivious to her feelings, he later returns them and they begin dating). (Manga only) In the anime, Masaya and Ichigo go to the park after going to the exhibit.
They have returned to kill the humans, who they feel are destroying their planet, and reclaim the planet.
At the beginning of the series, he and Ichigo go on a date to the red data animals exhibit where Ichigo met the other Mews and became a Mew Mew herself.
Later on, she begins acting like a cat, by eating a lot of fish, being more acrobatic (as in she can land on her feet like a cat does), and sleeping a lot.
During the date, she passes out when she is injected and has a dream of a cat going inside her or merging with her.
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