The time line is odd like I feel like she should be way older if the daughter of her crush is already in middle or high school
There is between 12-14 age gap between them at minimum. Aya was wearing her middle-school uniform when Misaki graduated so there were at least 3 years of difference and she was between 12 and 14 at that time. Even if Misaki would have a child immediately after graduation and Aya describing Kaori as "high schooler " is correct and she is in 1st year, that means Kaori is at least 15 (which would fit Aya mentioning "Children Protection Act since AoC in Japan is 16) and Aya is 27-29.
Edit. Japan AoC was 13 when it was published, but probably higher in her prefecture, so it still stand. I have 0 knowledge about Japan AoC outside age that Google told me.
last edited at Jul 3, 2025 1:40AM