Tomoko is a friend and love interest of Yukines Friend, Suzuha. She visited her grandmother every summer vacation, and would notice the flowers Suzuha tended to. First debuted in volume 4 in manga series.
When they first met, Tomoko appears to be a young girl, around 7-9 years old. She compliments the flowers, and begins listing off the flower species. Suzuha is impressed by her knowledge, and asks her to name off another species. She identified it as a "doodle doo." And proceeds to put one on top of her head, and at the base of her chin, mimicking a rooster.
The next time she is show she looks to be around 11-12, slightly taller and her features begin to show more. She compliments the flowers once more, but does not remember Suzuha. He is distressed by this. She appears to be wearing a quite similar outfit to what she was wearing before.
When we see her again, she looks to be 14-15 years old, with a more curvy figure and being taller. She again, compliments the flowers, not remebering Suzuha. Him being completely flustered.
Tomoko has light skin, sharp teeth, and a slender build. She has black hair, which is cut in a bob around her face. Her eyes are a reddish brown color, and she is seen as a teenager wearing a blue and white striped tank top, a white sun hat, and has a pink bag over her shoulder.
Tomoko seems to be cheerful and silly, when referring to the doodle doo flower. She also seems to be kind, as how she compliments Suzuhas flowers.