>>283413578
>>283413617
>>283413749
wiki says Akira's childhood car crash (age 7) and adoption was in 2029, then he was shot 10 years later so 2039 which would be 13 years before the war in 2052.

We can't know Towasa's physical age for sure because of the possibility of cryo sleep(s), but we know she is 1 year older than Akira, so if she never froze herself before the war she should be roughly 31 years old (18+13) during the war in 2052.