In The First Grade - Vol. 1 Ch. 6 - When he met the rokunensei

[MangaDex]

 

[manabi]

For those curious, rokunensei is sixth grade. So age eleven or twelve depending on the time of year and when her birthday is.

 

[SpecialProjectY]

Oh damn, that hit the feels although it's sprinkled with comedy.

Looks like Ion grew up strong but still cheerful, they finally had met after 10 years, shame he couldn't express how happy he is. Seems like her mother didn't remarried or kept her name, hope they reunite as she still cherish her bother.