Takagi San is a loli?

She is small from her height to her oppai's.

she's 12-13. She looks underage cause she is underage.

isn’t she like in middle school?

She is in highschool

No she’s literally in middle school she’s like 14 years old she’s straight up a pre-teen

No. She is in middle school. In S3 she was in 2nd year and currently in manga she is in 3rd year.

There's moto manga series where she is an adult (normal height).

No she's not, she's in midle school

13 is legal in japan.

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