The ultimate Gardener was bought up in a harsh lifestyle where her parents  were always out and about, forgetting her, so to distract herself from her loneliness she started gardening. It was pretty well known even up to the point where neighbours started to help around and she appreciated every part of it. To this day, she's an upbeat and cheery girl who tries to be the supporting character and her optimism sometimes goes for granted, though she's ready and willing to support any and all living things, such as plants, animals and people. Hikari doesn't look like a gardener because of her lab coat and she claims it's due to also studying plants, flowers and herbs, trying to create remedies and will often get lost in her own world when talking about such things or even coming across a plant or weed. She's worked on creating remedies in the past and that has led to her trying to work alongside Reo with his knowledge on toxicology.

The voice actor will have a playful attitude though they must be prepared to speak quietly at a moments notice