For some reason, i think mc become taller, bulkier and look matured here an like the other...

For some reason, i think mc become taller, bulkier and look matured here an like the other chapter before mc look before more like a child or teen and the age is right? If i remembered correctly he just graduated high-school right? So shouldn't he be like at least 18 or 19? I'm just curious and confused hahaha