Former classmates!!? Sakichi is the same age as Alicia so maybe they would've shared some classes!

I'm approaching you YET I'm sorry to say that Sakichi wasn't (and isn't) especially social so he wouldn't have tried real hard to be friends with her, but if she would've chatted with him then he would've chatted back!

He left for the military after high school, but he's come back recently and started working as a mailman. Whether or not they knew each other well in high school, it might be fun to have them connect again in the present!